A152276 - OEIS

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A152276

Number of 4's among the digits of all n-digit primes.

%I #4 Jul 20 2015 03:49:38

%S 0,3,31,326,3412,35234,358468,3625027,36582450,368381208,3704525518,

%T 37218251329,373639701352,3748854986738

%N Number of 4's among the digits of all n-digit primes.

%Y Cf. A130817, A152272, A152273, A152274, A152275, 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