### Peter Luschnymoderator

Discussion - **Theorem:**Every generalized pentagonal number c ≥ 2 can be written as c = 2a+b where a, b are smaller generalized pentagonal numbers.

Theorem by Andreas Enge, William Hart and Fredrik Johansson.

See also https://oeis.org/A001318

fredrikj.net / blog /. Additional results. August 26, 2016. The preprint Short addition sequences for theta functions (arXiv:1608.06810) by Andreas Enge, Bill Hart and myself is now available. We prove some nice new theorems about integer sequences of a very simple kind, namely successive values ...

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