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 A309175 #6 Jul 15 2019 15:40:44
%S A309175 1,1,1,5,17,89,769,5389,36385,448433,5058881,51656021,792623281,
%T A309175 10548735625,141646268737,2746494730589,42803661694529,
%U A309175 688682904155489,16532731961057665,317686449365041573,6296248862732350801,159762846613265335481,3488151227855502313601
%N A309175 E.g.f. A(x) satisfies: A(x) = (1 + x) * Product_{k>=2} A(x^k)^(1/k).
%F A309175 E.g.f.: Product_{k>=1} (1 + x^k)^(A074206(k)/k).
%t A309175 terms = 22; A[_] = 1; Do[A[x_] = (1 + x) Product[A[x^k]^(1/k), {k, 2, terms}] + O[x]^(terms + 1) // Normal, terms + 1]; CoefficientList[A[x], x] Range[0, terms]!
%Y A309175 Cf. A074206, A129373, A307605, A309174.
%K A309175 nonn
%O A309175 0,4
%A A309175 _Ilya Gutkovskiy_, Jul 15 2019