A152276 Number of 4's among the digits of all n-digit primes.

0, 3, 31, 326, 3412, 35234, 358468, 3625027, 36582450, 368381208, 3704525518, 37218251329, 373639701352, 3748854986738

Offset: 1

Author

Jon E. Schoenfield, Dec 01 2008

Keywords

• base
• nonn

Crossrefs

Cf. A130817, A152272, A152273, A152274, A152275, A152277, A152278, A152279, A152280, A152281.

Extensions

a(12)-a(14) from Giovanni Resta, Jul 20 2015