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%I #5 Mar 30 2012 18:56:45
%S 18,67,116,132,165,214,263,312,361,410,459,475,508,557,606,655,704,
%T 753,802,818,851,930,949,998,1047,1096,1145,1161,1194,1243,1292,1341,
%U 1390,1439,1488,1504,1537,1586,1635,1684,1733,1782
%N Numbers n such that string 2,4 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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