A249374: Prime numbers Q such that the concatenation Q,1,Q is prime
A249374 ➡️ https://oeis.org/A249374

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A249374.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A249374.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A249374.html

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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

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A249134: Numbers k such that Bernoulli number B_k has denominator 2730
A249134 ➡️ https://oeis.org/A249134

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A249134.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A249134.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A249134.html

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A248202: Sphenic numbers (A007304) whose neighbors are sphenic
A248202 ➡️ https://oeis.org/A248202

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A248202.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A248202.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A248202.html

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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

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A248201: Numbers n such that n-1, n and n+1 are all squarefree semiprimes
A248201 ➡️ https://oeis.org/A248201

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A248201.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A248201.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A248201.html

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A243937: Even numbers n>=6 for which lpf(n-1) > lpf(n-3), where lpf = least prime factor
A243937 ➡️ https://oeis.org/A243937

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A243937.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A243937.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A243937.html

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In the decomposition into weight × level + jump, the Twin Prime Conjecture becomes: "The number of prime numbers with a weight of 3 is infinite"

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A242414: Numbers whose prime factorization viewed as a tuple of nonzero powers is palindromic
A242414 ➡️ https://oeis.org/A242414

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A242414.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A242414.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A242414.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

A234695: Primes p with prime(p) - p + 1 also prime
A234695 ➡️ https://oeis.org/A234695

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A234695.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A234695.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A234695.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