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%I #5 Mar 30 2012 18:56:43
%S 28,109,190,252,271,352,433,514,595,676,757,838,919,981,1000,1081,
%T 1162,1243,1324,1405,1486,1567,1648,1710,1729,1810,1891,1972,2053,
%U 2134,2215,2268,2377,2439,2458,2539,2620,2701,2782
%N Numbers n such that string 3,1 occurs in the base 9 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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