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%I #5 Mar 30 2012 18:56:43
%S 27,127,227,270,327,427,527,627,727,827,927,1027,1127,1227,1270,1327,
%T 1427,1527,1627,1727,1827,1927,2027,2127,2227,2270,2327,2427,2527,
%U 2627,2700,2827,2927,3027,3127,3227,3270,3327,3427
%N Numbers n such that string 2,7 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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