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 A022711 #9 Jul 20 2018 06:04:13
%S A022711 1,-19,152,-665,1862,-4864,16891,-53770,126654,-297768,874703,
%T A022711 -2302800,5022650,-11816556,30449894,-70624311,153691133,-351589585,
%U A022711 812477658,-1798826901,3880086254,-8420178035,18486176635
%N A022711 Expansion of Product_{m>=1} (1+m*q^m)^-19.
%H A022711 G. C. Greubel, <a href="/A022711/b022711.txt">Table of n, a(n) for n = 0..1000</a>
%t A022711 With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-19, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 20 2018 *)
%o A022711 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-19)) \\ _G. C. Greubel_, Jul 20 2018
%K A022711 sign
%O A022711 0,2
%A A022711 _N. J. A. Sloane_