login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A022704 Expansion of Product_{m>=1} (1+m*q^m)^-12. 2
1, -12, 54, -112, 189, -804, 2534, -4104, 8202, -28116, 62976, -109224, 254223, -612048, 1262910, -2518896, 5112144, -11106144, 23407814, -44129784, 87494994, -185162108, 362468046, -687455256, 1354087433 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

MATHEMATICA

With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-12, {k, 1, nmax}], {q, 0, nmax}], q]] (* G. C. Greubel, Jul 20 2018 *)

PROG

(PARI) m=50; q='q+O('q^m); Vec(prod(n=1, m, (1+n*q^n)^-12)) \\ G. C. Greubel, Jul 20 2018

CROSSREFS

Sequence in context: A209676 A000735 A341558 * A060785 A059986 A088941

Adjacent sequences:  A022701 A022702 A022703 * A022705 A022706 A022707

KEYWORD

sign

AUTHOR

N. J. A. Sloane

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 10 01:36 EDT 2021. Contains 343747 sequences. (Running on oeis4.)