login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A022720 Expansion of Product_{m>=1} (1+m*q^m)^-28. 2
1, -28, 350, -2576, 12593, -45892, 149926, -514504, 1734264, -5142508, 14199108, -40931240, 117876241, -311946824, 796757922, -2104447072, 5482534827, -13518654268, 32992345904, -81755033080, 198688497651 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-28, {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)^-28)) \\ G. C. Greubel, Jul 20 2018
CROSSREFS
Sequence in context: A200968 A285739 A010833 * A272174 A173421 A085744
KEYWORD
sign
AUTHOR
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 12 16:40 EDT 2024. Contains 374251 sequences. (Running on oeis4.)