%I A044423
%S A044423 91,191,291,391,491,591,691,791,891,910,991,1091,1191,1291,1391,
%T A044423 1491,1591,1691,1791,1891,1910,1991,2091,2191,2291,2391,2491,
%U A044423 2591,2691,2791,2891,2910,2991,3091,3191,3291,3391,3491,3591
%N A044423 Numbers n such that string 9,1 occurs in the base 10 representation of 
               n but not of n-1.
%Y A044423 Sequence in context: A037998 A063367 A064904 this_sequence A044804 A051973 
               A000864
%Y A044423 Adjacent sequences: A044420 A044421 A044422 this_sequence A044424 A044425 
               A044426
%K A044423 nonn,base
%O A044423 1,1
%A A044423 Clark Kimberling (ck6(AT)evansville.edu)