A000379: Numbers where total number of 1-bits in the exponents of their prime factorization is even; a 2-way classification of integers: complement of A000028
A000379 ➡️ https://oeis.org/A000379

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A000379.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A000379.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A000379.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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A000378: Sums of three squares: numbers of the form x^2 + y^2 + z^2
A000378 ➡️ https://oeis.org/A000378

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A000378.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A000378.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A000378.html

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A000290: The squares: a(n) = n^2
A000290 ➡️ https://oeis.org/A000290

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

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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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A000217: Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n
A000217 ➡️ https://oeis.org/A000217

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

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A000201: Lower Wythoff sequence (a Beatty sequence): a(n) = floor(n*phi), where phi = (1+sqrt(5))/2 = A001622
A000201 ➡️ https://oeis.org/A000201

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

#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

A000124: Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts
A000124 ➡️ https://oeis.org/A000124

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

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A000096: a(n) = n*(n+3)/2
A000096 ➡️ https://oeis.org/A000096

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A000096.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A000096.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A000096.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