A305696 Coefficients of (q*(j(q)-744))^(-1/4) where j(q) is the elliptic modular invariant.

1, 0, -49221, -5373440, 5840692110, 1317368987136, -769081921703395, -285861152927176704, 99587019847435059600, 58472021328782000084480, -11456674101843809483255526, -11455351916487867258761894400, 892125673948866841204086469705

Offset

0,3

Links

Seiichi Manyama, Table of n, a(n) for n = 0..377

Eric Weisstein's World of Mathematics, j-Function

Formula

G.f.: Product_{k>0} (1 - x^k)^(A302407(k)/4).

Mathematica

CoefficientList[Series[((2^16 + x*QPochhammer[-1, x]^24)^3/(2*QPochhammer[-1, x])^24 - 744*x)^(-1/4), {x, 0, 15}], x] (* Vaclav Kotesovec, Jun 09 2018 *)

Crossrefs

(q*(j(q)-744))^(k/4): A305699 (k=-4), A305698 (k=-2), this sequence (k=-1), A304020 (k=1), A305697 (k=2).

Cf. A000521 (j), A014708 (j-744), A289397, A289416, A302407.

Sequence in context: A205360 A045085 A304020 * A184663 A184660 A054730

Adjacent sequences: A305693 A305694 A305695 * A305697 A305698 A305699

Keyword

sign

Author

Seiichi Manyama, Jun 08 2018

Status

approved