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 A371679 #9 Apr 03 2024 11:12:33
%S A371679 1,4,36,424,5696,82720,1264816,20060512,326990528,5444291968,
%T A371679 92193926528,1582961928448,27493991536384,482203526685696,
%U A371679 8527881803412224,151909590806619648,2723133151505640448,49087220319316809728,889230405958421051392
%N A371679 G.f. satisfies A(x) = ( 1 + x * A(x)^(3/2) * (1 + A(x)) )^2.
%F A371679 G.f.: B(x)^2 where B(x) is the g.f. of A363311.
%F A371679 a(n) = 2 * Sum_{k=0..n} binomial(n,k) * binomial(3*n+2*k+2,n)/(3*n+2*k+2).
%o A371679 (PARI) a(n, r=2, t=3, u=2) = r*sum(k=0, n, binomial(n, k)*binomial(t*n+u*k+r, n)/(t*n+u*k+r));
%Y A371679 Cf. A363311, A371675.
%K A371679 nonn
%O A371679 0,2
%A A371679 _Seiichi Manyama_, Apr 02 2024