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 A022723 #9 Jul 20 2018 03:48:10
%S A022723 1,-31,434,-3627,20367,-84537,296825,-1027805,3586700,-11522204,
%T A022723 33703882,-97807604,289043659,-814257997,2164448117,-5763699428,
%U A022723 15479115951,-40058137473,100379076723,-252617470522,633832842041
%N A022723 Expansion of Product_{m>=1} (1+m*q^m)^-31.
%H A022723 G. C. Greubel, <a href="/A022723/b022723.txt">Table of n, a(n) for n = 0..1000</a>
%t A022723 With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-31, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 20 2018 *)
%o A022723 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-31)) \\ _G. C. Greubel_, Jul 20 2018
%K A022723 sign
%O A022723 0,2
%A A022723 _N. J. A. Sloane_