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%I #6 Aug 25 2014 11:53:09
%S 1,2,2,10,3,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
%T 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
%U 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10
%N Smallest nontrivial k such that k^n - 1 is a palindrome (k >1 for n>1).
%C The sequence is infinite as 10 always qualifies: 10^k - 1 is always a palindrome, hence a(n) <=10. Is there any n > 5 for which a(n) is not equal to 10?
%e a(5) = 3 as 3^5 -1 = 242 is a palindrome.
%Y Cf. A083456.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 01 2003
%E More terms from _David Wasserman_, Nov 11 2004
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