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 A298261 #4 Jan 15 2018 21:07:08
%S A298261 1,-1,0,1,-2,2,-1,-1,4,-9,16,-19,1,59,-158,229,-129,-297,1066,-1878,
%T A298261 1992,-216,-4862,13912,-24258,25406,4162,-90120,233708,-359262,264319,
%U A298261 360325,-1745699,3624263,-4623550,1795485,8918014,-29893776,55251854,-61018833,-1455525
%N A298261 G.f. A(x) satisfies A(x) = Product_{k>=1} (1 - x^k*A(x)).
%e A298261 G.f. A(x) = 1 - x + x^3 - 2*x^4 + 2*x^5 - x^6 - x^7 + 4*x^8 - 9*x^9 + ...
%e A298261 G.f. A(x) satisfies A(x) = (1 - x*A(x)) * (1 - x^2*A(x)) * (1 - x^3*A(x)) * ...
%Y A298261 Cf. A145267, A145268, A298260.
%K A298261 sign
%O A298261 0,5
%A A298261 _Ilya Gutkovskiy_, Jan 15 2018