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 A215704 #13 Sep 22 2015 10:02:53 %S A215704 1,1,6,27,156,1110,8322,70098,646272,6333336,66712680,745731360, %T A215704 8780828328,108873486072,1413807287760,19157627737080,270460073295360, %U A215704 3965693824244160,60266513065134528,947644484349584448,15389579447794454400,257702782790624613120 %N A215704 n-th derivative of ((x^x)^x)^x at x=1. %C A215704 Also n-th derivative of x^(x^3) at x=1. %C A215704 First term < 0: a(57). %H A215704 Alois P. Heinz, <a href="/A215704/b215704.txt">Table of n, a(n) for n = 0..400</a> %F A215704 E.g.f.: (x+1)^((x+1)^3). %p A215704 a:= n-> n!*coeff(series(subs(x=x+1, ((x^x)^x)^x ), x, n+1), x, n): %p A215704 seq(a(n), n=0..25); %Y A215704 Column k=5 of A215703. %Y A215704 Cf. A005727, A179230, A179405, A215524. %K A215704 sign %O A215704 0,3 %A A215704 _Alois P. Heinz_, Aug 21 2012