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 A355094 #8 Jun 19 2022 08:42:00
%S A355094 1,3,15,84,321,-2157,-57126,-23496,19229199,114026754,-14369595177,
%T A355094 -124727102772,21679898019936,89714147328354,-57010454409251982,
%U A355094 653678598376462566,223463102168891738085,-9691395708350731626375,-1087655068021435814109648
%N A355094 E.g.f. A(x) satisfies A(x) = 1 + 3 * (1 - exp(-x)) * A(1 - exp(-x)).
%F A355094 E.g.f. A(x) satisfies: A(-log(1-x)) = 1 + 3*x*A(x).
%F A355094 a(0) = 1; a(n) = 3 * Sum_{k=1..n} (-1)^(n-k) * k * Stirling2(n,k) * a(k-1).
%o A355094 (PARI) a_vector(n) = my(v=vector(n+1)); v[1]=1; for(i=1, n, v[i+1]=3*sum(j=1, i, (-1)^(i-j)*j*stirling(i, j, 2)*v[j])); v;
%Y A355094 Cf. A353177, A355093.
%Y A355094 Cf. A355103.
%K A355094 sign
%O A355094 0,2
%A A355094 _Seiichi Manyama_, Jun 19 2022