A044623 - OEIS

%I #5 Mar 30 2012 18:56:45

%S 55,119,183,247,311,375,447,503,567,631,695,759,823,887,959,1015,1079,

%T 1143,1207,1271,1335,1399,1471,1527,1591,1655,1719,1783,1847,1911,

%U 1983,2039,2103,2167,2231,2295,2359,2423,2495,2551

%N Numbers n such that string 6,7 occurs in the base 8 representation of n but not of n+1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_