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%I #5 Mar 30 2012 18:56:45
%S 11,60,83,109,158,207,256,305,354,403,426,452,501,587,599,648,697,746,
%T 769,795,844,893,942,991,1040,1089,1112,1138,1187,1236,1285,1334,1383,
%U 1432,1455,1481,1530,1579,1628,1677,1726,1775
%N Numbers n such that string 1,4 occurs in the base 7 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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