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 A385060 #8 Jun 16 2025 08:40:54 %S A385060 1,1,9,43,125,-6279,-412025,-9060911,-98234103,10633082401, %T A385060 1397628908171,76301056937865,3570677332342477,-21017427583370399, %U A385060 -28544077526642620977,-3624219130398256821119,-403594553235196466813935,-26214785940427662614214975,-249746440937109731554641389 %N A385060 E.g.f. A(x) satisfies A(x) = exp(x*A(x)/A(-x*A(x))^3). %F A385060 See A385063. %o A385060 (PARI) a(n, k=-1) = if(n*k==0, 0^n, (-1)^n*k*sum(j=1, n, (-n+k)^(j-1)*binomial(n, j)*a(n-j, 3*j))); %Y A385060 Column k=1 of A385063. %Y A385060 Cf. A052774, A384984. %K A385060 sign %O A385060 0,3 %A A385060 _Seiichi Manyama_, Jun 16 2025