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 A357092 #11 Sep 11 2022 10:07:54 %S A357092 1,0,2,6,58,580,7568,119448,2195772,46413792,1106667072,29403619080, %T A357092 861570383232,27600893313552,959793100481616,36006430081497120, %U A357092 1449539553826089360,62334045415459189248,2851721291051846833152,138299011223141244621024 %N A357092 E.g.f. satisfies A(x)^A(x) = (1 - x * A(x))^log(1 - x * A(x)). %F A357092 E.g.f. satisfies A(x) * log(A(x)) = log(1 - x * A(x))^2. %F A357092 a(n) = Sum_{k=0..floor(n/2)} (2*k)! * (n-k+1)^(k-1) * |Stirling1(n,2*k)|/k!. %o A357092 (PARI) a(n) = sum(k=0, n\2, (2*k)!*(n-k+1)^(k-1)*abs(stirling(n, 2*k, 1))/k!); %Y A357092 Cf. A141209, A357093. %Y A357092 Cf. A357028. %K A357092 nonn %O A357092 0,3 %A A357092 _Seiichi Manyama_, Sep 11 2022