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 A355093 #8 Jun 19 2022 08:42:03 %S A355093 1,2,6,14,-50,-838,1730,136530,-486826,-53845210,608573414, %T A355093 39761626434,-1250658124134,-39125693738246,3470290682698798, %U A355093 1980500546819286,-11592469556319388642,475984934077375262394,35772633977318034763762 %N A355093 E.g.f. A(x) satisfies A(x) = 1 + 2 * (1 - exp(-x)) * A(1 - exp(-x)). %F A355093 E.g.f. A(x) satisfies: A(-log(1-x)) = 1 + 2*x*A(x). %F A355093 a(0) = 1; a(n) = 2 * Sum_{k=1..n} (-1)^(n-k) * k * Stirling2(n,k) * a(k-1). %o A355093 (PARI) a_vector(n) = my(v=vector(n+1)); v[1]=1; for(i=1, n, v[i+1]=2*sum(j=1, i, (-1)^(i-j)*j*stirling(i, j, 2)*v[j])); v; %Y A355093 Cf. A353177, A355094. %Y A355093 Cf. A355102. %K A355093 sign %O A355093 0,2 %A A355093 _Seiichi Manyama_, Jun 19 2022