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A321458 Expansion of Product_{1 <= i <= j <= k} (1 - x^(i^2 + j^2 + k^2)). 2
1, 0, 0, -1, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 2, 0, 1, -1, -1, 2, 0, 0, 1, 0, 3, -3, -1, 1, -1, 4, -1, 1, 0, -5, 1, -1, 0, 0, -1, 5, -2, -7, -1, -1, 5, 0, 0, 2, -5, -2, -3, 1, 3, -3, 5, 1, -3, -8, -4, 16, 1, 4, -1, 2, 4, -17, 4, 5, 2, 10, -6, 10, -7, -23, 18, 3, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,16

LINKS

Table of n, a(n) for n=0..77.

FORMULA

G.f.: Product_{k>0} (1 - x^k)^A025427(k).

CROSSREFS

Cf. A025427, A321432, A321436, A321457, A321459.

Sequence in context: A286950 A210638 A272903 * A226194 A053692 A341024

Adjacent sequences:  A321455 A321456 A321457 * A321459 A321460 A321461

KEYWORD

sign

AUTHOR

Seiichi Manyama, Nov 10 2018

STATUS

approved

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Last modified September 26 17:00 EDT 2021. Contains 347670 sequences. (Running on oeis4.)