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Numbers n such that string 4,8 occurs in the base 10 representation of n but not of n+1.
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%I #5 Mar 30 2012 18:56:46

%S 48,148,248,348,448,489,548,648,748,848,948,1048,1148,1248,1348,1448,

%T 1489,1548,1648,1748,1848,1948,2048,2148,2248,2348,2448,2489,2548,

%U 2648,2748,2848,2948,3048,3148,3248,3348,3448,3489

%N Numbers n such that string 4,8 occurs in the base 10 representation of n but not of n+1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_