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A319244 Expansion of Product_{k>0} (1 - x^(k^3))/(1 + x^(k^3)). 1
1, -2, 2, -2, 2, -2, 2, -2, 0, 2, -2, 2, -2, 2, -2, 2, 0, -2, 2, -2, 2, -2, 2, -2, 0, 2, -2, 0, 2, -2, 2, -2, 4, -6, 6, -2, -2, 2, -2, 2, -4, 6, -6, 2, 2, -2, 2, -2, 4, -6, 6, -2, -2, 2, 0, -2, 0, 2, -2, -2, 6, -6, 2, 2, -2, 2, -2, 6, -10, 10, -6, 2, 0, -2, 2, -6, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..76.

FORMULA

Convolution inverse of A280263.

CROSSREFS

Product_{k>0} (1 - x^(k^m))/(1 + x^(k^m)): A002448 (m=1), A319243 (m=2), this sequence (m=3).

Cf. A280263.

Sequence in context: A230410 A044925 A323356 * A309286 A102671 A292519

Adjacent sequences:  A319241 A319242 A319243 * A319245 A319246 A319247

KEYWORD

sign

AUTHOR

Seiichi Manyama, Sep 15 2018

STATUS

approved

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Last modified October 21 01:38 EDT 2021. Contains 348132 sequences. (Running on oeis4.)