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.

A285311 Expansion of Product_{k>=0} 1/(1 + x^(4*k+3))^(4*k+3).

Original entry on oeis.org

1, 0, 0, -3, 0, 0, 6, -7, 0, -10, 21, -11, 15, -42, 61, -36, 70, -150, 150, -124, 278, -441, 375, -468, 909, -1131, 1018, -1581, 2602, -2810, 2947, -4819, 6768, -6980, 8509, -13389, 16788, -17609, 23722, -34720, 40337, -44863, 63128, -85430, 95887, -114037
Offset: 0

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Author

Seiichi Manyama, Apr 16 2017

Keywords

Crossrefs

Product_{k>=0} 1/(1 + x^(m*k+m-1))^(m*k+m-1): A284628 (m=2), A285310 (m=3), this sequence (m=4).
Cf. A285131.

Formula

a(n) = (-1)^n * A285131(n).