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 A307543 #5 Apr 14 2019 07:51:44 %S A307543 1,1,2,4,7,12,21,37,66,118,210,373,662,1175,2087,3709,6592,11714, %T A307543 20813,36977,65695,116722,207389,368486,654716,1163271,2066840, %U A307543 3672256,6524693,11592791,20597577,36596883,65023721,115531233,205270716,364715855,648010941,1151357116 %N A307543 G.f. A(x) satisfies: A(x) = 1/(1 + (-x)^a(0)/(1 + (-x)^a(1)/(1 + (-x)^a(2)/(1 + (-x)^a(3)/(1 + ...))))), a continued fraction. %e A307543 G.f.: A(x) = 1 + x + 2*x^2 + 4*x^3 + 7*x^4 + 12*x^5 + 21*x^6 + 37*x^7 + 66*x^8 + ... = 1/(1 - x/(1 - x/(1 + x^2/(1 + x^4/(1 - x^7/(1 + ...)))))). %Y A307543 Cf. A213411. %K A307543 nonn %O A307543 0,3 %A A307543 _Ilya Gutkovskiy_, Apr 14 2019