A036537: Numbers whose number of divisors is a power of 2

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A036537.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A036537.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A036537.html

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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

A036455: Numbers n such that d(d(n)) is an odd prime, where d(k) is the number of divisors of k

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A036455.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A036455.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A036455.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

A036441: a(n+1) = next number having largest prime dividing a(n) as a factor, with a(1) = 2

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A036441.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A036441.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A036441.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

A036433: Number of divisors is a digit in the base 10 representation of n

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A036433.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A036433.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A036433.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

One of my banks has rolled out "improvements" to their online banking.

I have only noticed one difference so far: when paying bills, the resulting confirmation number is now 17 digits long, instead of 8. 🤦‍♂️

#bank #confirmation #number #online #OnlineBanking #ToServeYouBetter

A036301: Numbers whose sum of even digits and sum of odd digits are equal

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A036301.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A036301.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A036301.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

We see the fundamental theorem of arithmetic and the sieve of Eratosthenes in the decomposition into weight × level + jump of natural numbers. Applied to prime numbers this decomposition leads to a new classification of primes.

#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

A035928: Numbers n such that BCR(n) = n, where BCR = binary-complement-and-reverse = take one's complement then reverse bit order

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A035928.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A035928.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A035928.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