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 A384957 #8 Jun 14 2025 00:18:55
%S A384957 1,990,2206149,6450139410,21553605027306,77957908218716988,
%T A384957 297118041166459732781,1175248212459867447863562,
%U A384957 4779368947089383238327733950,19858241947988743766121587718308,83936671517628352407663509802203682,359778601391313651280693986124971038388,1560159110515342136997114532804454280500084
%N A384957 Expansion of g.f.: exp(Sum_{n>=1} A295433(n)*x^n/n).
%F A384957 G.f.: exp(Sum_{n>=1} (12*n)!*n!*x^n/((8*n)!*(3*n)!*(2*n)!)/n).
%o A384957 (PARI) seq(n)=Vec(exp(sum(n=1, n, (12*n)!*n!*x^n/((8*n)!*(3*n)!*(2*n)!)/n, O(x*x^n)) )) \\ _Andrew Howroyd_, Jun 13 2025
%Y A384957 Cf. A295432, A255881, A243953, A166990, A229451, A383796.
%K A384957 nonn
%O A384957 0,2
%A A384957 _Karol A. Penson_, Jun 13 2025