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 A375870 #12 Sep 01 2024 09:38:49
%S A375870 1,2,18,310,8038,280264,12313242,653591922,40704551630,2910862397646,
%T A375870 235114931752898,21172206066055312,2103333121459719446,
%U A375870 228525476912967164714,26957670075375556803178,3431314158743477432894790,468762478424957403561956702
%N A375870 E.g.f. satisfies A(x) = exp( 2 * (exp(x*A(x)^(3/2)) - 1) ).
%F A375870 E.g.f.: B(x)^2, where B(x) is the e.g.f. of A349683.
%F A375870 a(n) = 2 * Sum_{k=0..n} (3*n+2)^(k-1) * Stirling2(n,k).
%o A375870 (PARI) a(n) = 2*sum(k=0, n, (3*n+2)^(k-1)*stirling(n, k, 2));
%Y A375870 Cf. A349683, A375871, A375872.
%Y A375870 Cf. A001861, A370056.
%K A375870 nonn
%O A375870 0,2
%A A375870 _Seiichi Manyama_, Sep 01 2024