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 A176823 #14 Jul 23 2024 15:29:36
%S A176823 0,1,8,17,399,73,44638,1570497,5077565,486784401,22187726197,
%T A176823 166394893969,13800864889148,762517292682713,9603465430859099,
%U A176823 803800832678655745,3180753925351614970,947615093635545799201
%N A176823 a(n) = n^(n+1) mod (n+1)^n.
%t A176823 Table[PowerMod[n,n+1,(n+1)^n],{n,0,20}] (* _Harvey P. Dale_, May 11 2017 *)
%K A176823 nonn
%O A176823 0,3
%A A176823 _Vladimir Joseph Stephan Orlovsky_, Apr 26 2010
%E A176823 Offset changed to 0 by _Georg Fischer_, Jul 23 2024