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 A330499 #11 Dec 17 2019 02:38:34
%S A330499 0,1,2,13,71,558,5344,60926,766898,10759096,168848256,2947203048,
%T A330499 56368708824,1165246323408,25802649445728,609940593443952,
%U A330499 15377212949988624,412827548455415040,11764577341464710016,354392697960438122880,11237993013428254071936
%N A330499 Expansion of e.g.f. Sum_{k>=1} log(1 + log(1/(1 - x))^k).
%H A330499 Vaclav Kotesovec, <a href="/A330499/b330499.txt">Table of n, a(n) for n = 0..400</a>
%H A330499 Vaclav Kotesovec, <a href="/A330499/a330499.jpg">Graph - the asymptotic ratio</a>
%F A330499 a(n) ~ n! * c / (1 - exp(-1))^n, where c = 0.478656...
%t A330499 nmax = 20; CoefficientList[Series[Sum[Log[1+Log[1/(1-x)]^k], {k, 1, nmax}], {x, 0, nmax}], x] * Range[0, nmax]!
%Y A330499 Cf. A007840, A330354, A330388, A330494, A330498.
%K A330499 nonn
%O A330499 0,3
%A A330499 _Vaclav Kotesovec_, Dec 16 2019