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 A364630 #8 Jul 30 2023 09:20:08
%S A364630 1,3,17,153,1621,18732,229103,2915498,38204497,512027945,6985933889,
%T A364630 96705749625,1354868839933,19175008086962,273731258980839,
%U A364630 3936883123412972,56991044183321197,829750943505927435,12142121554514962205,178488780583916045949
%N A364630 G.f. satisfies A(x) = (1+x*A(x)^4)/(1-x)^2.
%F A364630 a(n) = Sum_{k=0..n} binomial(n+7*k+1,8*k+1) * binomial(4*k,k) / (3*k+1).
%o A364630 (PARI) a(n) = sum(k=0, n, binomial(n+7*k+1, 8*k+1)*binomial(4*k, k)/(3*k+1));
%Y A364630 Cf. A162477, A364629.
%K A364630 nonn
%O A364630 0,2
%A A364630 _Seiichi Manyama_, Jul 30 2023