A122269 Expansion of f(-q)^10*Q(q) in powers of q.

1, 230, -205, -6510, 18615, 478, 0, -181220, 221595, 246380, -329666, 360910, -1444915, 0, 2504645, 925922, -2420665, 0, 109940, -8382140, 5764801, 6217240, 13420615, -12214840, -17672945, 20722082, -24540725, 0, 0, 17018700, 54717118, -97990, -61107435

Offset

0,2

Comments

f(-q) (g.f. A010815) and Q(q) (g.f. A004009) are Ramanujan q-series.

Links

Table of n, a(n) for n=0..32.

Prog

(PARI) {a(n)=local(A); if(n<0, 0, A=x*O(x^n); polcoeff( eta(x+A)^10*sum(k=1, n, 240*sigma(k, 3)*x^k, 1+A), n))}

Crossrefs

Sequence in context: A028452 A072020 A177826 * A171666 A321503 A140077

Adjacent sequences: A122266 A122267 A122268 * A122270 A122271 A122272

Keyword

sign

Author

Michael Somos, Aug 28 2006

Status

approved