|
|
A289333
|
|
Coefficients of (q*(j(q)-1728))^(5/24) where j(q) is the elliptic modular invariant.
|
|
13
|
|
|
1, -205, -38830, -10493215, -3586921610, -1369515719416, -558606292282075, -238153389340570570, -104811899537297598195, -47246821512435762941195, -21700419062680514765163503, -10118052721530705778119535745
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
G.f.: Product_{k>=1} (1-q^k)^(5*A289061(k)/24).
a(n) ~ c * exp(2*Pi*n) / n^(17/12), where c = -5 * 3^(1/3) * Gamma(2/3)^2 * exp(-5*Pi/12) * Gamma(1/12) / (2^(49/12) * Pi^(19/12) * Gamma(3/4)^(5/3)) = -0.28184482434015938133067183460309604452260645657140372869996481157015... - Vaclav Kotesovec, Mar 07 2018
|
|
MATHEMATICA
|
CoefficientList[Series[((256/QPochhammer[-1, x]^8 + x*QPochhammer[-1, x]^16/256)^3 - 1728*x)^(5/24), {x, 0, 20}], x] (* Vaclav Kotesovec, Mar 07 2018 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|