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 A365546 #11 Nov 08 2023 07:51:11 %S A365546 1,1,3,23,298,5314,120776,3341568,108992472,4095073848,174169888536, %T A365546 8272115427432,433956083676336,24921123498835056,1555004372522100384, %U A365546 104757005524567577088,7578056156152486855680,585874671534300791384064 %N A365546 E.g.f. satisfies A(x) = 1 - log(1 - x*A(x)^3)/A(x)^2. %F A365546 a(n) = Sum_{k=0..n} (3*n-2*k)!/(3*n-3*k+1)! * |Stirling1(n,k)|. %o A365546 (PARI) a(n) = sum(k=0, n, (3*n-2*k)!/(3*n-3*k+1)!*abs(stirling(n, k, 1))); %Y A365546 Cf. A138013, A365438. %K A365546 nonn %O A365546 0,3 %A A365546 _Seiichi Manyama_, Nov 08 2023