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%I #6 Jan 17 2016 13:55:23
%S 0,13,2,22,3,7,19,31,39,4,8,16,24,28,36,40,44,1,9,13,17,21,72,25,29,
%T 33,37,135,41,45,143,2,53,6,10,155,14,112,18,116,22,120,26,171,30,222,
%U 34,273,85,38,183,42,281,93,46,238,97,3,195,54,7,199,58,11,250,109,15,301
%N 18^a(n) is smallest power of 18 beginning with n.
%H D. Mondot, <a href="/A180704/b180704.txt">Table of n, a(n) for n=1..32699</a>
%Y Cf. A180702, A180703, A180706
%K base,nonn
%O 1,2
%A _Daniel Mondot_, Sep 18 2010
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