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 A301418 #4 Mar 21 2018 08:01:32 %S A301418 1,1,3,12,56,288,1584,9153,54940,339937,2156457,13970079,92147905, %T A301418 617468715,4195848863,28873188732,200982289554,1413914236788, %U A301418 10045715705912,72041560145703,521233406146366,3803409400869139,27982484503275869,207531162828185908,1551323994123301229 %N A301418 G.f. A(x) satisfies: A(x) = 1/(1 - x*A(x)/(1 - x*A(x)/(1 - x*A(x)^2/(1 - x*A(x)^2/(1 - x*A(x)^3/(1 - x*A(x)^3/(1 - ...))))))), a continued fraction. %e A301418 G.f. A(x) = 1 + x + 3*x^2 + 12*x^3 + 56*x^4 + 288*x^5 + 1584*x^6 + 9153*x^7 + 54940*x^8 + ... %Y A301418 Cf. A006958, A192737, A301412. %K A301418 nonn %O A301418 0,3 %A A301418 _Ilya Gutkovskiy_, Mar 20 2018