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%I #5 Mar 30 2012 18:56:44
%S 71,171,271,371,471,571,671,710,771,871,971,1071,1171,1271,1371,1471,
%T 1571,1671,1710,1771,1871,1971,2071,2171,2271,2371,2471,2571,2671,
%U 2710,2771,2871,2971,3071,3171,3271,3371,3471,3571
%N Numbers n such that string 7,1 occurs in the base 10 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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