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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A022659 Expansion of Product_{m>=1} (1+m*q^m)^31. 2
 1, 31, 527, 6510, 65162, 559271, 4259276, 29444575, 187761854, 1117650502, 6267006128, 33341859350, 169281687755, 824110662334, 3862233690794, 17483338870409, 76663232042998, 326438219863590 (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+m*q^m)^31, {m, 1, nmax}], {q, 0, nmax}], q]] (* G. C. Greubel, Jul 18 2018 *) PROG (PARI) m=50; q='q+O('q^m); Vec(prod(n=1, m, (1+n*q^n)^31)) \\ G. C. Greubel, Jul 18 2018 (Magma) Coefficients(&*[(1+m*x^m)^31:m in [1..40]])[1..50] where x is PolynomialRing(Integers()).1; // G. C. Greubel, Jul 18 2018 CROSSREFS Sequence in context: A241888 A316457 A278558 * A038395 A261620 A196492 Adjacent sequences: A022656 A022657 A022658 * A022660 A022661 A022662 KEYWORD nonn 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 6 10:00 EST 2023. Contains 367600 sequences. (Running on oeis4.)