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 A316085 #15 Jun 18 2019 06:56:58
%S A316085 1,3,23,220,2800,42315,763220,15710280,366711200,9529898752,
%T A316085 273549419552,8586085364211,292755986184548,10772558331396572,
%U A316085 425587704331945152,17966093939959188380,807152054953801845760,38451298338305570267680
%N A316085 Product_{k>=1} 1/(1 - a(k)*x^k) = Sum_{k>=0} (k*x)^k.
%H A316085 Seiichi Manyama, <a href="/A316085/b316085.txt">Table of n, a(n) for n = 1..386</a>
%F A316085 a(n) ~ n^n. - _Vaclav Kotesovec_, Jun 18 2019
%e A316085 1/((1-x)*(1-3*x^2)*(1-23*x^3)*(1-220*x^4)* ... ) = 1 + x + 4*x^2 + 27*x^3 + 256*x^4 + ... .
%Y A316085 Cf. A000312, A316083.
%K A316085 nonn
%O A316085 1,2
%A A316085 _Seiichi Manyama_, Jun 23 2018