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 A305537 #4 Jun 04 2018 17:55:17
%S A305537 1,2,11,87,844,9438,118217,1636078,24869591,414422424,7568815758,
%T A305537 151468591827,3317061005044,79265498450882,2058189152006115,
%U A305537 57777549430984983,1744191365957251044,56332730020388347302,1937412176139535240463,70659708678402399722656
%N A305537 G.f. A(x) satisfies: A(x) = 1/(1 - x*A(x) - x*A(x)/(1 - x*A(x) - 2*x*A(x)/(1 - x*A(x) - 3*x*A(x)/(1 - x*A(x) - 4*x*A(x)/(1 - ...))))), a continued fraction.
%H A305537 <a href="/index/Be#Bessel">Index entries for sequences related to Bessel functions or polynomials</a>
%F A305537 a(n) = [x^n] (Sum_{k>=0} A001515(k)*x^k)^(n+1)/(n + 1).
%e A305537 G.f. A(x) = 1 + 2*x + 11*x^2 + 87*x^3 + 844*x^4 + 9438*x^5 + 118217*x^6 + 1636078*x^7 + 24869591*x^8 + ...
%Y A305537 Cf. A001515, A027307, A301363.
%K A305537 nonn
%O A305537 0,2
%A A305537 _Ilya Gutkovskiy_, Jun 04 2018