One day, one decomposition
A001358: Semiprimes (or biprimes): products of two primes

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

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One day, one decomposition
A251728: Semiprimes p*q for which p <= q < p^2

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A251728.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A251728.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A251728.html

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One day, one decomposition
A248201: Numbers n such that n-1, n and n+1 are all squarefree semiprimes

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

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One day, one decomposition
A228183: Semiprimes generated by the Euler polynomial x^2 + x + 41

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A228183.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A228183.html

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One day, one decomposition
A157352: Products (semiprimes) of two distinct safe primes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A157352.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A157352.html

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One day, one decomposition
A138511: Semiprimes where the larger prime factor is greater than the square of the smaller prime factor, short: semiprimes p*q, p^2 < q

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A138511.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A138511.html

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One day, one decomposition
A109373: Semiprimes of the form semiprime + 1

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A109373.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A109373.html

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One day, one decomposition
A106349: Primes indexed by semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A106349.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A106349.html

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One day, one decomposition
A105571: Numbers m such that m - 2 and m + 2 are semiprimes

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A105571.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A105571.html

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One day, one decomposition
A100484: The primes doubled (even semiprimes)

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

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