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%I #5 Mar 31 2012 10:32:40
%S 2,12,81,598,4708,38622,327823,2847315,25163920,225457188,2042143752,
%T 18663517814,171846353051
%N Number of primes between A092800(n) and 10^n.
%F a(n) = PrimePi(10^n)-PrimePi(A092800(n)) = PrimePi(10^n)-PrimePi(A046731(n)/A006880(n)). - _Robert G. Wilson v_, Jan 19 2007
%e Below 10^1 there are 4 primes: 2+3+5+7=17. The rounded mean is 17/4 =~ 4. There are 2 primes > 4: 5 and 7, so a(1)=2.
%Y Cf. A092800, A092849, A092851.
%K nonn
%O 1,1
%A _Enoch Haga_, Mar 07 2004
%E a(9)-a(13) from _Robert G. Wilson v_, Jan 19 2007
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