A044693 - OEIS

%I #5 Mar 30 2012 18:56:46

%S 61,142,223,304,385,466,547,557,628,709,790,871,952,1033,1114,1195,

%T 1276,1286,1357,1438,1519,1600,1681,1762,1843,1924,2005,2015,2086,

%U 2167,2248,2329,2410,2491,2572,2653,2734,2744,2815

%N Numbers n such that string 6,7 occurs in the base 9 representation of n but not of n+1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_