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%I #5 Mar 30 2012 18:56:46
%S 23,123,223,239,323,423,523,623,723,823,923,1023,1123,1223,1239,1323,
%T 1423,1523,1623,1723,1823,1923,2023,2123,2223,2239,2399,2423,2523,
%U 2623,2723,2823,2923,3023,3123,3223,3239,3323,3423
%N Numbers n such that string 2,3 occurs in the base 10 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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