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 A022699 #12 Jul 20 2018 06:03:01
%S A022699 1,-7,14,-7,49,-203,217,-295,1365,-2667,4214,-8519,16842,-38570,69012,
%T A022699 -104433,240758,-493374,786835,-1434601,2842567,-5272206,9205546,
%U A022699 -16034312,29916572,-55466005,95595395,-163656780
%N A022699 Expansion of Product_{m>=1} 1/(1 + m*q^m)^7.
%H A022699 G. C. Greubel, <a href="/A022699/b022699.txt">Table of n, a(n) for n = 0..1000</a>
%F A022699 G.f.: exp(-7*Sum_{j>=1} Sum_{k>=1} (-1)^(j+1)*k^j*x^(j*k)/j). - _Ilya Gutkovskiy_, Feb 08 2018
%t A022699 With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-7, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 19 2018 *)
%o A022699 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-7)) \\ _G. C. Greubel_, Jul 19 2018
%Y A022699 Column k=7 of A297325.
%K A022699 sign
%O A022699 0,2
%A A022699 _N. J. A. Sloane_