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 A292134 #20 Aug 21 2018 04:49:46
%S A292134 1,-1,2,-21,220,-2705,40926,-733537,15124216,-352606050,9174382490,
%T A292134 -263533561852,8283376452948,-282795708021411,10420847619031710,
%U A292134 -412243715452039440,17425722339237083120,-783844576340696848341,37384875796116662077194
%N A292134 Main diagonal of A292133.
%H A292134 Seiichi Manyama, <a href="/A292134/b292134.txt">Table of n, a(n) for n = 0..386</a>
%F A292134 a(n) = [x^n] Product_{k>=1} 1/(1 + n*x^k).
%F A292134 a(n) ~ (-1)^n * n^n * (1 - 1/n + 2/n^2 - 3/n^3 + 5/n^4 - 7/n^5 + 11/n^6 - 15/n^7 + 22/n^8 - 30/n^9 + 42/n^10 - ...), for coefficients, see A000041. - _Vaclav Kotesovec_, Aug 21 2018
%o A292134 (PARI) {a(n) = polcoeff(1/prod(k=1, n, 1+n*x^k+x*O(x^n)), n)}
%Y A292134 Cf. A124577, A291698.
%K A292134 sign
%O A292134 0,3
%A A292134 _Seiichi Manyama_, Sep 09 2017