A118882: Numbers which are the sum of two squares in two or more different ways
A118882 ➡️ https://oeis.org/A118882

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A118882.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A118882.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A118882.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 first, favorite and most important sequence, the weights of prime numbers: A117078
We see prime numbers classified by level and by weight on the graph.

A117078: a(n) is the smallest k such that prime(n+1) = prime(n) + (prime(n) mod k), or 0 if no such k exists ➡️ https://oeis.org/A117078

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

A118369: Numbers k such that 1 + Product_{d|k} d is prime
A118369 ➡️ https://oeis.org/A118369

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A118369.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A118369.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A118369.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

A118134: Primes p such that 4p is the sum of two consecutive primes
A118134 ➡️ https://oeis.org/A118134

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A118134.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A118134.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A118134.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:
- a new classification of primes ➡️ https://decompwlj.com/primedecomp.php
- in 3D - threejs - webGL ➡️ 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

A117876: Primes p=prime(k) of level (1,2), i.e., such that A118534(k) = prime(k-2)
A117876 ➡️ https://oeis.org/A117876

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A117876.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A117876.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A117876.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

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tex.social: TeX Stack Exchange decline

I’ll comment a bit later on it, but here’s Stack Exchange own public data on questions over the years, from https://data.stackexchange.com/tex/query/1926661#graph: See also: Original Source by Stefan Kottwitz

🔗 Ver original