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 A377328 #7 Oct 25 2024 09:29:30 %S A377328 1,1,11,250,8789,420646,25536083,1880370598,162872596937, %T A377328 16227667154806,1828467483194975,229904271890603014, %U A377328 31913005486577248877,4847412341607090455110,799762918909215143560907,142427688272456020835132518,27231132645610171996487568017,5563389652463220933157357670806 %N A377328 E.g.f. satisfies A(x) = 1 + A(x)^2 * (exp(x*A(x)^3) - 1). %F A377328 a(n) = Sum_{k=0..n} (3*n+2*k)!/(3*n+k+1)! * Stirling2(n,k). %o A377328 (PARI) a(n) = sum(k=0, n, (3*n+2*k)!/(3*n+k+1)!*stirling(n, k, 2)); %Y A377328 Cf. A052752, A367135, A367181, A377324. %K A377328 nonn %O A377328 0,3 %A A377328 _Seiichi Manyama_, Oct 25 2024