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 A196192 #9 Aug 25 2024 13:34:13
%S A196192 1,1,4,16,77,389,2128,12019,70185,418788,2544938,15687842,97871618,
%T A196192 616729500,3919686231,25096525793,161723865118,1048085548563,
%U A196192 6826585371618,44664343473618,293407529533947,1934484748893113,12796683165889635,84906535878961845
%N A196192 G.f. satisfies A(x) = 1/Product_{n>=1} (1 - x^n*A(x^n)^2).
%e A196192 G.f.: A(x) = 1 + x + 4*x^2 + 16*x^3 + 77*x^4 + 389*x^5 + 2128*x^6 +...
%e A196192 where
%e A196192 A(x) = 1/((1 - x*A(x)^2) * (1 - x^2*A(x^2)^2) * (1 - x^3*A(x^3)^2) *...).
%o A196192 (PARI) {a(n)=local(A=1+x); for(i=1, n, A=1/prod(k=1, n, (1-x^k*subst(A,x,x^k+x*O(x^n))^2))); polcoeff(A, n)}
%Y A196192 Cf. A050383, A196191.
%K A196192 nonn
%O A196192 0,3
%A A196192 _Paul D. Hanna_, Sep 28 2011