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%I #5 Mar 30 2012 18:56:43
%S 67,148,229,310,391,472,553,603,634,715,796,877,958,1039,1120,1201,
%T 1282,1332,1363,1444,1525,1606,1687,1768,1849,1930,2011,2061,2092,
%U 2173,2254,2335,2416,2497,2578,2659,2740,2790,2821
%N Numbers n such that string 7,4 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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