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%I #3 Mar 30 2012 18:52:33
%S 0,1,4,81,4,625,36,343,512,9,1000000000,1,12,14,14,15,16,18,18,20,1,
%T 21,22,529,576,9765625,676,387420489,1,30,1,32,1024,1,34,42875,1296,
%U 38,54872,1521,40,1,42,1849,44,4100625,1,48,5308416,1,50,1,52,2809,1,55
%N a(1)=0, a(n+1) is the smallest nonprime >= n^smallest digit of a(n).
%e 0, 1(=1^0), 4(>2^1), 81(=3^4), 4(=4^1), 625(=5^4), 36(=6^2), 343(=7^3), 512(=8^3), 9(=9^1), 1000000000(=10^9), 1(=11^0), 12(=12^1), 14(>13=13^1), 14(=14^1), 15(=15^1)
%Y Cf. A000027, A141468, A156615.
%K nonn,base
%O 1,3
%A _Juri-Stepan Gerasimov_, Mar 12 2009
%E a(21) inserted and terms from a(28) on corrected by _R. J. Mathar_, Mar 17 2009