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 A245194 #3 Jul 23 2014 16:26:58
%S A245194 0,0,0,1,-1,0,1,1,-2,0,0,1,0,0,1,1,-3,0,0,1,-1,0,1,1,-1,0,0,1,0,0,1,1,
%T A245194 -4,0,0,1,-1,0,1,1,-2,0,0,1,0,0,1,1,-2,0,0,1,-1,0,1,1,-1,0,0,1,0,0,1,
%U A245194 1,-5,0,0,1,-1,0,1,1,-2,0,0,1,0,0,1,1,-3,0,0,1,-1,0,1,1,-1,0,0,1,0,0,1
%N A245194 G.f.: Sum_{k>=0} t^3/((1+t)*(1+t^2)), where t=x^(2^k).
%Y A245194 Partial sums give A014081.
%K A245194 sign
%O A245194 0,9
%A A245194 _N. J. A. Sloane_, Jul 23 2014