A044429 - OEIS

A044429

Numbers n such that string 9,7 occurs in the base 10 representation of n but not of n-1.

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

%S 97,197,297,397,497,597,697,797,897,970,997,1097,1197,1297,1397,1497,

%T 1597,1697,1797,1897,1970,1997,2097,2197,2297,2397,2497,2597,2697,

%U 2797,2897,2970,2997,3097,3197,3297,3397,3497,3597

%N Numbers n such that string 9,7 occurs in the base 10 representation of n but not of n-1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_