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 A301411 #4 Mar 21 2018 08:01:15 %S A301411 1,2,12,108,1192,14848,200432,2866752,42853392,663565616,10579117744, %T A301411 172911177584,2888445810864,49203276384624,853289008064304, %U A301411 15047071017842928,269585532569464752,4904425594952671344,90570287337341726256,1697589267552262891760,32295562088556275945136 %N A301411 G.f. A(x) satisfies: A(x) = 1/(1 - x*A(x) - x*A(x)^2/(1 - x*A(x)^3 - x*A(x)^4/(1 - x*A(x)^5 - x*A(x)^6/(1 - ...)))), a continued fraction. %e A301411 G.f. A(x) = 1 + 2*x + 12*x^2 + 108*x^3 + 1192*x^4 + 14848*x^5 + 200432*x^6 + 2866752*x^7 + 42853392*x^8 + ... %Y A301411 Cf. A088352, A092869, A192737, A301410. %K A301411 nonn %O A301411 0,2 %A A301411 _Ilya Gutkovskiy_, Mar 20 2018