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 A022622 #12 Feb 15 2018 08:12:27
%S A022622 1,-27,351,-2952,18279,-90234,376065,-1380861,4603419,-14211732,
%T A022622 41168493,-112989411,296067411,-745157691,1809973404,-4259279106,
%U A022622 9741879531,-21715736634,47285714262,-100777640049,210581729640,-432065248731,871606288422,-1730764207107,3386501241606
%N A022622 Expansion of Product_{m>=1} (1+q^m)^(-27).
%H A022622 G. C. Greubel, <a href="/A022622/b022622.txt">Table of n, a(n) for n = 0..1000</a>
%F A022622 a(n) ~ (-1)^n * sqrt(3) * exp(3*Pi*sqrt(n/2)) / (2^(7/4) * n^(3/4)). - _Vaclav Kotesovec_, Aug 27 2015
%t A022622 nmax = 50; CoefficientList[Series[Product[1/(1 + x^k)^27, {k, 1, nmax}], {x, 0, nmax}], x] (* _Vaclav Kotesovec_, Aug 27 2015 *)
%K A022622 sign
%O A022622 0,2
%A A022622 _N. J. A. Sloane_