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 A355205 #16 Jun 25 2022 07:11:03 %S A355205 1,2,6,28,184,1596,17508,235592,3799736,72125344,1587567768, %T A355205 40027332256,1144113365576,36747710168568,1316192996129064, %U A355205 52219780699310176,2281487895137577232,109193200290592216368,5698144666408068511472 %N A355205 E.g.f. A(x) satisfies A'(x) = 1 + 2 * A(-log(1-x)). %H A355205 Seiichi Manyama, <a href="/A355205/b355205.txt">Table of n, a(n) for n = 1..325</a> %F A355205 a(1) = 1; a(n+1) = 2 * Sum_{k=1..n} |Stirling1(n,k)| * a(k). %o A355205 (PARI) a_vector(n) = my(v=vector(n)); v[1]=1; for(i=1, n-1, v[i+1]=2*sum(j=1, i, abs(stirling(i, j, 1))*v[j])); v; %Y A355205 Cf. A143805, A355098. %K A355205 nonn %O A355205 1,2 %A A355205 _Seiichi Manyama_, Jun 24 2022