This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A022675 #9 Sep 08 2022 08:44:46 %S A022675 1,-15,75,-50,-750,1797,2220,-6975,-13980,6220,125682,-8910,-387885, %T A022675 -365160,62130,3177433,2777445,-3799695,-17320915,-28897950,39859074, %U A022675 105240645,131649465,-50100225,-602800010,-882445182 %N A022675 Expansion of Product_{m >= 1} (1-m*q^m)^15. %H A022675 G. C. Greubel, <a href="/A022675/b022675.txt">Table of n, a(n) for n = 0..1000</a> %t A022675 With[{nmax = 50}, CoefficientList[Series[Product[(1 - k*q^k)^15, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 18 2018 *) %o A022675 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1-n*q^n)^15)) \\ _G. C. Greubel_, Jul 18 2018 %o A022675 (Magma) Coefficients(&*[(1-m*x^m)^15:m in [1..40]])[1..40] where x is PolynomialRing(Integers()).1; // _G. C. Greubel_, Jul 18 2018 %K A022675 sign %O A022675 0,2 %A A022675 _N. J. A. Sloane_