A152274 Number of 2's among the digits of all n-digit primes.

1, 2, 29, 359, 3515, 35666, 361054, 3647203, 36746382, 369719841, 3715552230, 37310055810, 374416981198, 3755522785108

Offset: 1

Author

Jon E. Schoenfield, Dec 01 2008

Keywords

• base
• nonn

Crossrefs

Cf. A130817, A152272, A152273, A152275, A152276, A152277, A152278, A152279, A152280, A152281.

Extensions

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