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 A293573 #6 Oct 12 2017 16:16:38
%S A293573 1,1,-1,-5,1,41,751,-461,-61375,-114479,3197791,51784811,95861569,
%T A293573 -13289759495,-88386566449,1959369708451,39596487031681,
%U A293573 144047673616289,-17707296608390465,-244965944457878309,5109519579305499521,149507697206554889161
%N A293573 E.g.f.: exp(x/(1 + x + x^2 + x^3 + x^4)).
%F A293573 E.g.f.: Product_{k>0} exp(x^(5*k-4)) / exp(x^(5*k-3)).
%o A293573 (PARI) N=66; x='x+O('x^N); Vec(serlaplace(exp(x/(1+x+x^2+x^3+x^4))))
%o A293573 (PARI) N=66; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, exp(x^(5*k-4)-x^(5*k-3)))))
%Y A293573 Cf. A111884, A293571, A293572.
%K A293573 sign
%O A293573 0,4
%A A293573 _Seiichi Manyama_, Oct 12 2017