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%I #5 Dec 05 2013 19:56:38
%S 1,4,64,81,16807,1000000,10000000,100000000,1000000000,10000000000,
%T 100000000000,1000000000000,10000000000000,100000000000000,
%U 1000000000000000,10000000000000000,100000000000000000
%N Least n-th power that begins with k^(n-1) for some k > 1.
%C a(n) = 10^n for 6 <= n <= 500 (I haven't checked past 500.) - _David Wasserman_, Jan 05 2006
%e a(1) = 1 because 1 begins with 2^0. a(5) = 16807 because 16807 begins with 2^4.
%Y Cf. A090568.
%Y Cf. A067442.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Dec 11 2003
%E Corrected and extended by _David Wasserman_, Jan 05 2006