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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
OFFSET
0,16
FORMULA
G.f.: Product_{k>0} (1 - x^k)^A025427(k).
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Nov 10 2018
STATUS
approved