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