A044440 - OEIS

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

%S 7,16,23,25,34,43,50,52,61,71,77,79,88,97,104,106,115,124,131,133,142,

%T 152,158,160,169,178,185,187,215,223,233,239,241,250,259,266,268,277,

%U 286,293,295,304,314,320,322,331,340,347,349

%N Numbers n such that string 2,1 occurs in the base 3 representation of n but not of n+1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_