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 A215524 #29 Feb 07 2021 11:31:22 %S A215524 1,1,4,12,52,240,1188,6804,38960,253296,1654560,11816640,85816608, %T A215524 668005728,5240582592,44667645120,365989405440,3494595006720, %U A215524 28075694694912,325862541872640,2101211758356480,39605981661066240,48568198208302080,7549838510211486720,-66667098077331572736 %N A215524 n-th derivative of (x^x)^x at x=1. %H A215524 Alois P. Heinz, <a href="/A215524/b215524.txt">Table of n, a(n) for n = 0..400</a> %F A215524 E.g.f.: ((x+1)^(x+1))^(x+1). %p A215524 a:= n-> n!*coeff(series(subs(x=x+1, (x^x)^x ), x, n+1), x, n): %p A215524 seq(a(n), n=0..30); %t A215524 m = 24; CoefficientList[((x+1)^(x+1))^(x+1) + O[x]^(m+1), x]*Range[0, m]! (* _Jean-François Alcover_, Feb 07 2021 *) %Y A215524 Column k=3 of A215703. %Y A215524 Cf. A005727, A179230, A179405, A215522. %K A215524 sign %O A215524 0,3 %A A215524 _Alois P. Heinz_, Aug 14 2012