cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A321423 Expansion of 1/2 * Product_{0 <= i <= j} (1 + x^(i^2 + j^2)).

Original entry on oeis.org

1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 4, 4, 4, 5, 6, 7, 7, 8, 10, 11, 12, 12, 14, 16, 17, 20, 22, 25, 27, 29, 33, 36, 39, 41, 46, 52, 56, 60, 65, 72, 79, 84, 91, 100, 109, 118, 125, 136, 147, 158, 172, 185, 201, 215, 232, 251, 269, 287, 306, 331, 357, 381, 406, 436, 469, 503
Offset: 0

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Author

Seiichi Manyama, Nov 09 2018

Keywords

Crossrefs

Formula

G.f.: Product_{k>0} (1 + x^k)^A000161(k).
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