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%I #6 Jan 17 2016 13:54:45
%S 0,2,3,15,4,16,5,11,17,57,6,12,86,18,1,24,7,47,13,87,36,2,93,42,8,116,
%T 65,31,14,105,71,37,3,128,94,60,26,9,134,100,66,49,15,140,123,106,72,
%U 55,21,4,129,112,95,78,44,27,10,152,135,101,84,67,50,33,16,158,141,124,107
%N 15^a(n) is smallest power of 15 beginning with n.
%H D. Mondot, <a href="/A180698/b180698.txt">Table of n, a(n) for n=1..32699</a>
%Y Cf. A180696, A180697, A180700
%K base,nonn
%O 1,2
%A _Daniel Mondot_, Sep 18 2010