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 A382187 #8 Mar 18 2025 16:24:02
%S A382187 1,2,8,32,138,604,2696,12176,55512,254888,1177064,5461040,25435296,
%T A382187 118856272,556962928,2616287392,12315914698,58084552572,274395134600,
%U A382187 1298187523792,6150051540460,29170558879736,138512004786624,658362443599296,3132140164624680
%N A382187 Expansion of 1/(1 - 4 * Sum_{k>=0} x^(2^k))^(1/2).
%F A382187 G.f. A(x) satisfies A(x) = 1/(1/A(x^2)^2 - 4*x)^(1/2).
%Y A382187 Cf. A023359, A382188.
%Y A382187 Cf. A223142.
%K A382187 nonn,easy
%O A382187 0,2
%A A382187 _Seiichi Manyama_, Mar 18 2025