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 A379939 #7 Jan 07 2025 08:44:48
%S A379939 1,0,3,6,117,852,16335,231354,5169801,109149768,2929053339,
%T A379939 81073827150,2593779841917,87970941597276,3298932148606887,
%U A379939 131818125152516418,5692856683050644625,261303806858004143376,12794600152539073620531,662722202747157809616918
%N A379939 E.g.f. A(x) satisfies A(x) = ( exp(-x*A(x)^(2/3)) + x*A(x) )^3.
%F A379939 E.g.f.: B(x)^3, where B(x) is the e.g.f. of A379877.
%F A379939 a(n) = -3 * n! * Sum_{k=0..n} (-2*n-3)^(n-k-1) * binomial(2*n+k+2,k)/(n-k)!.
%o A379939 (PARI) a(n) = -3*n!*sum(k=0, n, (-2*n-3)^(n-k-1)*binomial(2*n+k+2, k)/(n-k)!);
%Y A379939 Cf. A379877, A379937.
%K A379939 nonn
%O A379939 0,3
%A A379939 _Seiichi Manyama_, Jan 07 2025