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%I #6 Nov 21 2013 12:50:03
%S 13,169,28561,815730721,665416609183179841,
%T 442779263776840698304313192148785281,
%U 196053476430761073330659760423566015424403280004115787589590963842248961
%N 13^(2^n)
%C a(n+1)=a(n)^2 with a(0)=13
%t 13^(2^Range[0,7]) (* _Harvey P. Dale_, Apr 18 2011 *)
%K nonn
%O 0,1
%A _Vincenzo Librandi_, Apr 21 2010
%E Offset corrected by R. J. Mathar, Jun 18 2010
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