A044359 - OEIS

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A044359

Numbers n such that string 2,7 occurs in the base 10 representation of n but not of n-1.

%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_