OFFSET
0,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..1000
Eric Weisstein's World of Mathematics, Eisenstein Series.
FORMULA
G.f.: (1 + 240 Sum_{i>=1} i^3 q^i/(1-q^i))^6.
MATHEMATICA
terms = 14;
E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms}];
E4[x]^6 + O[x]^terms // CoefficientList[#, x]& (* Jean-François Alcover, Feb 27 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Feb 12 2017
STATUS
approved