Intriguing:

“Unsigned Sizes: A Five Year Mistake”, The C3 Programming Language (https://c3-lang.org/blog/unsigned-sizes-a-five-year-mistake/).

Via HN: https://news.ycombinator.com/item?id=47989154

On Lobsters: https://lobste.rs/s/bzltqt/unsigned_sizes_five_year_mistake

#Programming #Arithmetic #Integers #Math #PLDI #C3 #Unsigned #Signed #Errors

A005385: Safe primes p: (p-1)/2 is also prime
A005385 ➡️ https://oeis.org/A005385

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Safe_primes.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/Safe_primes.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Safe_primes.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

150 sequences decomposed into weight × level + jump in one GIF (log(weight),log(level)):
1000 sequences decomposed on https://decompwlj.com

#decompwlj #math #mathematics #maths #sequence #OEIS #graph #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

A005384: Sophie Germain primes p: 2p+1 is also prime
A005384 ➡️ https://oeis.org/A005384

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Sophie_Germain_primes.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/Sophie_Germain_primes.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Sophie_Germain_primes.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

A005383: Primes p such that (p+1)/2 is prime
A005383 ➡️ https://oeis.org/A005383

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A005383.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A005383.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A005383.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

Decomposition into weight × level + jump of prime numbers in 3D, threejs - webGL (log(weight), log(level), log(jump))
➡️ https://decompwlj.com/3Dgraph/Prime_numbers.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

A005382: Primes p such that 2p-1 is also prime
A005382 ➡️ https://oeis.org/A005382

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A005382.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A005382.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A005382.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

A005381: Numbers k such that k and k-1 are composite
A005381 ➡️ https://oeis.org/A005381

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A005381.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A005381.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A005381.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

My data have not been verified but my work is highly reproducible.
- Downloads (csv, img, dump) ➡️ https://decompwlj.com/
- Algorithms ➡️ https://oeis.org/wiki/Decomposition_into_weight_*_level_%2B_jump#Algorithms

#decompwlj #math #mathematics #maths #sequence #OEIS #PARIGP #numbers #primes #PrimeNumbers #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research

A005349: Niven (or Harshad, or harshad) numbers: numbers that are divisible by the sum of their digits
A005349 ➡️ https://oeis.org/A005349

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Niven_numbers.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/Niven_numbers.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Niven_numbers.html

#decompwlj #math #mathematics #maths #sequence #OEIS #JavaScript #php #graph #3D #threejs #webGL #triangular #numbers #primes #PrimeNumbers #palindromes #animation #FundamentalTheoremOfArithmetic #sequences #NumberTheory #classification #integer #decomposition #number #theory #equation #graphs #sieve #fundamental #theorem #arithmetic #research