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%I #5 Mar 30 2012 18:56:43
%S 61,125,189,253,317,381,445,488,509,573,637,701,765,829,893,957,1000,
%T 1021,1085,1149,1213,1277,1341,1405,1469,1512,1533,1597,1661,1725,
%U 1789,1853,1917,1981,2024,2045,2109,2173,2237,2301
%N Numbers n such that string 7,5 occurs in the base 8 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_