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A004418
Expansion of (Sum_{n=-inf..inf} x^(n^2))^(-17).
1
1, -34, 612, -7752, 77486, -649944, 4751976, -31070016, 185025348, -1017375098, 5220022312, -25201899288, 115265410488, -502210951832, 2094181357968, -8390590348992, 32410328691374, -121046064563376
OFFSET
0,2
LINKS
FORMULA
a(n) ~ (-1)^n * exp(Pi*sqrt(m*n)) * m^((m+1)/4) / (2^(3*(m+1)/2) * n^((m+3)/4)), set m = 17 for this sequence. - Vaclav Kotesovec, Aug 18 2015
MATHEMATICA
nmax = 30; CoefficientList[Series[Product[((1 + (-x)^k)/(1 - (-x)^k))^17, {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Aug 18 2015 *)
CROSSREFS
Sequence in context: A010986 A232079 A264067 * A322501 A020928 A061689
KEYWORD
sign
STATUS
approved