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Number of 6's among the digits of all n-digit primes.
9

%I #4 Jul 20 2015 03:51:08

%S 0,2,31,336,3372,34973,356907,3612084,36476490,367550925,3697683123,

%T 37160602675,373149954035,3744652623110

%N Number of 6's among the digits of all n-digit primes.

%Y Cf. A130817, A152272, A152273, A152274, A152275, A152276, A152277, 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