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A285285
Expansion of Product_{k>=1} (1 - x^k)^k/(1 - x^(5*k))^(5*k).
3
1, -1, -2, -1, 0, 9, -1, -3, -2, -2, 36, -22, -40, -34, -23, 154, -53, -89, -48, -4, 652, -161, -352, -293, -213, 1974, -813, -1416, -1198, -838, 6386, -2328, -3970, -3054, -1682, 20641, -5637, -10436, -8183, -4723, 59693, -17856, -32830, -28002, -19303
OFFSET
0,3
LINKS
MATHEMATICA
nmax = 50; CoefficientList[Series[Product[(1 - x^k)^k/(1 - x^(5*k))^(5*k), {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Apr 16 2017 *)
CROSSREFS
Product_{k>=1} (1 - x^k)^k/(1 - x^(m*k))^(m*k): A285069 (m=2), A285247 (m=3), A285284 (m=4), this sequence (m=5).
Sequence in context: A202817 A322222 A265012 * A374491 A338858 A201897
KEYWORD
sign
AUTHOR
Seiichi Manyama, Apr 16 2017
STATUS
approved