A033950: Refactorable numbers: number of divisors of k divides k. Also known as tau numbers
A033950 ➡️ https://oeis.org/A033950

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

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A033949: Positive integers that do not have a primitive root
A033949 ➡️ https://oeis.org/A033949

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033949.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033949.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033949.html

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A033948: Numbers that have a primitive root (k such that the multiplicative group modulo k is cyclic)
A033948 ➡️ https://oeis.org/A033948

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033948.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033948.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033948.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

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A033556: a(n+1) = 2a(n) - {largest prime < a(n)}
A033556 ➡️ https://oeis.org/A033556

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033556.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033556.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033556.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

A033203: Primes p congruent to {1, 2, 3} (mod 8); or primes p of form x^2 + 2*y^2; or primes p such that x^2 = -2 has a solution mod p
A033203 ➡️ https://oeis.org/A033203

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033203.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033203.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033203.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

A033201: Primes of the form x^2 + 10*y^2
A033201 ➡️ https://oeis.org/A033201

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033201.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033201.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033201.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

A033015: Numbers whose base-2 expansion has no run of digits with length < 2
A033015 ➡️ https://oeis.org/A033015

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A033015.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A033015.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A033015.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