%I #5 Mar 30 2012 18:56:43
%S 27,108,189,243,270,351,432,513,594,675,756,837,918,972,999,1080,1161,
%T 1242,1323,1404,1485,1566,1647,1701,1728,1809,1890,1971,2052,2133,
%U 2187,2295,2376,2430,2457,2538,2619,2700,2781,2862
%N Numbers n such that string 3,0 occurs in the base 9 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_