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 A053042 #18 Feb 08 2017 16:19:07
%S A053042 2,6,33,280,3245,47376,828583,16817536,387783369,10003628800,
%T A053042 285351587411,8916579449856,302881333613053,11112094003849216,
%U A053042 437895198055227375,18446764996499439616,827240617573764860177,39346414477670243303424
%N A053042 a(n) = n^n + n!.
%H A053042 Alois P. Heinz, <a href="/A053042/b053042.txt">Table of n, a(n) for n = 1..200</a>
%F A053042 E.g.f.: 1/(1 + LambertW(-x)) + 1/(1 - x), where LambertW() is the Lambert W-function. - _Ilya Gutkovskiy_, Jan 08 2017
%t A053042 lst={};Do[AppendTo[lst, n^n+n! ], {n, 3*4!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Nov 20 2008 *)
%t A053042 Table[n^n+n!,{n,20}] (* _Harvey P. Dale_, Dec 31 2016 *)
%Y A053042 Cf. A000142, A000312, A036679.
%K A053042 nonn
%O A053042 1,1
%A A053042 _N. J. A. Sloane_, Feb 24 2000