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 A337808 #10 Sep 24 2020 07:27:35
%S A337808 1,1,65,50881,231455105,4104215813761,220579355255364545,
%T A337808 30221200809380332664641,9302731197994837387680880385,
%U A337808 5843241203886533657008940262539521,6942621504765123845961888310824174754625,14676663615276526648053662674115841827580734401
%N A337808 O.g.f.: 1/(1 - x/(1 - 2^6*x/(1 - 3^6*x/(1 - 4^6*x/(1 - 5^6*x/(1 - 6^6*x/(1 -...))))))), a continued fraction.
%F A337808 a(n) ~ c * d^n * (n!)^6 / sqrt(n), where
%F A337808 d = 12^6 * Gamma(1/3)^6 / Gamma(1/6)^12 = 1.247526211138803516951432724912344768287048859917010218640563910368330569...
%F A337808 c = sqrt(3*d/Pi) = 1.091466801527496975151641909038030945303075901009696629477...
%t A337808 nmax = 15; CoefficientList[Series[1/Fold[(1 - #2/#1) &, 1, Reverse[Range[nmax + 1]^6*x]], {x, 0, nmax}], x]
%Y A337808 Cf. A001147, A000364, A216966, A227887, A337807, A337809.
%K A337808 nonn
%O A337808 0,3
%A A337808 _Vaclav Kotesovec_, Sep 23 2020