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 A070526 #4 Oct 15 2013 22:31:19
%S A070526 1,5,73,257,1082401,4033,4432676798593,4294967297,18014398643699713,
%T A070526 1098438933505,1298708349570020393652962442872833,281474959933441,
%U A070526 91355004067076339167413824240109498970069278721
%N A070526 Value of n-th cyclotomic polynomial at 2^n.
%e A070526 n=5: a(5)=C[5,32]=1+32+1024+32768+1048576=1082401
%t A070526 Table[Cyclotomic[w, 2^w], {w, 1, 15}]
%Y A070526 Cf. A070518-A070525.
%K A070526 easy,nonn
%O A070526 1,2
%A A070526 _Labos Elemer_, May 02 2002