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 A152841 #4 Mar 31 2012 12:38:17
%S A152841 1,0,-4,-1,-115,-1
%N A152841 a(0)=1; a(n)=Floor[n^(n+a(n-1))-a(n-1)^(n+a(n-1))].
%t A152841 lst={};a=1;Do[a=a^(n+a)-n^(n+a);AppendTo[lst,Floor[a]],{n,0,5}];lst
%Y A152841 Cf. A084964, A152832, A152833, A152835, A152836, A152837, A152838, A152839, A152840
%K A152841 sign
%O A152841 0,3
%A A152841 _Vladimir Joseph Stephan Orlovsky_, Dec 14 2008
%E A152841 Indices added to definition, offset corrected - _R. J. Mathar_, Jan 08 2009