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Numbers n such that string 1,0 occurs in the base 3 representation of n but not of n+1.
0

%I #5 Mar 30 2012 18:56:44

%S 3,12,21,39,48,57,66,75,120,129,138,147,156,165,174,183,201,210,219,

%T 228,237,363,372,381,390,399,408,417,426,444,453,462,471,480,489,498,

%U 507,525,534,543,552,561,606,615,624,633,642,651

%N Numbers n such that string 1,0 occurs in the base 3 representation of n but not of n+1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_