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%I #3 Mar 30 2012 18:50:45
%S 1,1,1,1,1,1,2,2,1,2,2,1,2,2,1,1,2,2,1,2,2,1,1,1,1,2,2,2,2,1,1,1,2,2,
%T 2,2,1,1,1,1,2,2,2,2,2,2,1,1,2,2,1,2,2,1,1,1,2,2,1,2,2,1,1,2,2,1,1,1,
%U 2,2,1,1,1,1,1,1,1,1,1,1,2,2,2,2,1,1,1,1,2,2,1,1,1,1,1,1,1,2,2,1,1,1,1,2,2
%N Number of primes that are not less than prime(n)-Log2(Log2(prime(n))) and not greater than prime(n)+Log2(Log2(prime(n))), where Log2=A000523.
%C a(n) = A000720(A098392(n)) - A000720(A098393(n)-1);
%C a(n) <= A098396(n) <= A098397(n) <= A097935(n);
%C a(n)<=2 for n<=6543; a(6544)=#{2^16+1=65537,65539,65543}=3.
%e a(10) = #{p prime: A098392(10) <= p <= A098393(10)} =
%e = #{p prime: 27 <= p <= 31} = #{29,31} = 2.
%K nonn
%O 1,7
%A _Reinhard Zumkeller_, Sep 06 2004
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