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%I #5 Mar 30 2012 18:56:42
%S 25,74,123,172,175,221,270,319,368,417,466,515,518,564,613,662,711,
%T 760,809,858,861,907,956,1005,1054,1103,1152,1201,1204,1225,1299,1348,
%U 1397,1446,1495,1544,1547,1593,1642,1691,1740,1789
%N Numbers n such that string 3,4 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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