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 A121275 #9 Jun 22 2013 16:05:58
%S A121275 4,49,1000,28561,1048576,47045881,2494357888,208827064576,
%T A121275 14507145975869,1125899906842624,96549157373046875,
%U A121275 9065737908494995456,925103102315013629321,101938319743841411792896
%N A121275 (Ceiling(n*Pi))^n.
%H A121275 Vincenzo Librandi, <a href="/A121275/b121275.txt">Table of n, a(n) for n = 1..200</a>
%t A121275 Table[Ceiling[(n Pi)]^n, {n, 20}] (* _Vincenzo Librandi_, Feb 22 2013 *)
%Y A121275 Cf. A121246, A121247.
%K A121275 nonn,less
%O A121275 1,1
%A A121275 _Mohammad K. Azarian_, Aug 23 2006