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 A382335 #8 Mar 22 2025 08:41:49
%S A382335 1,2,4,-2,10,-2,-20,82,-108,-114,1052,-2702,2054,11394,-52636,99534,
%T A382335 32938,-831698,2649676,-3119694,-8779530,54334130,-125649628,31877726,
%U A382335 849214460,-3274210670,5129552132,7097067566,-65583106070,180299051838,-133300439300
%N A382335 Expansion of ( 1 + 4 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k))^2 )^(1/2).
%F A382335 G.f. A(x) satisfies A(x) = ( A(x^2)^2 + 4*x/(1-x)^2 )^(1/2).
%Y A382335 Cf. A129527, A382336.
%Y A382335 Cf. A223142, A382333.
%K A382335 sign,easy
%O A382335 0,2
%A A382335 _Seiichi Manyama_, Mar 22 2025