%I #5 Mar 30 2012 18:56:42

%S 7,42,79,115,151,187,223,252,295,331,367,403,439,474,511,547,583,619,

%T 655,690,727,763,799,835,871,906,943,979,1015,1051,1087,1122,1159,

%U 1195,1231,1267,1303,1338,1375,1411,1447,1483,1512

%N Numbers n such that string 1,1 occurs in the base 6 representation of n but not of n-1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_