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 A022698 #12 Jul 20 2018 04:21:27
%S A022698 1,-6,9,-2,42,-132,95,-210,840,-1394,2442,-4374,8589,-20862,31812,
%T A022698 -48758,119856,-222228,347038,-631992,1220781,-2228812,3730962,
%U A022698 -6390948,11861066,-21539358,35874624,-59882714,110055054
%N A022698 Expansion of Product_{m>=1} 1/(1 + m*q^m)^6.
%H A022698 G. C. Greubel, <a href="/A022698/b022698.txt">Table of n, a(n) for n = 0..1000</a>
%F A022698 G.f.: exp(-6*Sum_{j>=1} Sum_{k>=1} (-1)^(j+1)*k^j*x^(j*k)/j). - _Ilya Gutkovskiy_, Feb 08 2018
%t A022698 With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-6, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 19 2018 *)
%o A022698 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-6)) \\ _G. C. Greubel_, Jul 19 2018
%Y A022698 Column k=6 of A297325.
%K A022698 sign
%O A022698 0,2
%A A022698 _N. J. A. Sloane_