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 A357348 #14 Sep 09 2024 09:34:07
%S A357348 0,1,9,172,5181,214196,11279542,722242795,54482959375,4732518179422,
%T A357348 465226448603533,51061919634063284,6189640391474229790,
%U A357348 821277806639279795053,118394082630978607655201,18426248367244130561233924,3079294928622816257125500821
%N A357348 E.g.f. satisfies A(x) = (exp(x * exp(A(x))) - 1) * exp(3 * A(x)).
%H A357348 <a href="/index/Res#revert">Index entries for reversions of series</a>
%F A357348 a(n) = Sum_{k=1..n} (n+3*k)^(k-1) * Stirling2(n,k).
%F A357348 E.g.f.: Series_Reversion( exp(-x) * log(1 + x * exp(-3*x)) ). - _Seiichi Manyama_, Sep 09 2024
%o A357348 (PARI) a(n) = sum(k=1, n, (n+3*k)^(k-1)*stirling(n, k, 2));
%Y A357348 Cf. A052888, A357346, A357347, A357424.
%Y A357348 Cf. A357345.
%K A357348 nonn
%O A357348 0,3
%A A357348 _Seiichi Manyama_, Sep 25 2022