A152275 - OEIS

%I #7 Jul 20 2015 03:48:26

%S 1,8,66,602,5552,52541,505880,4907822,47923752,469985783,4625005356,

%T 45629711436,451086676886,4466423651321

%N Number of 3's among the digits of all n-digit primes.

%t Join[{1},Table[Count[Flatten[IntegerDigits/@Prime[Range[PrimePi[10^(n-1)]+ 1,PrimePi[10^n]]]],3],{n,2,11}]] (* _Harvey P. Dale_, Dec 18 2011 *)

%Y Cf. A130817, A152272, A152273, A152274, A152276, A152277, A152278, A152279, A152280, A152281.

%K base,nonn

%O 1,2

%A _Jon E. Schoenfield_, Dec 01 2008

%E a(12)-a(14) from _Giovanni Resta_, Jul 20 2015