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Number of primes <= A214757(n)
4

%I #19 Nov 13 2013 17:12:24

%S 5,5,5,10,25,31,104,159,190,219,1186,1832,2227,3388,14358,30804,31547,

%T 40935,103522,104072,149690,325853,1094426,1319950,2850175,6957880,

%U 10539433,10655464

%N Number of primes <= A214757(n)

%F a(n) = pi(A214757(n)) = A000217(A214757(n)).

%e A214757(4) = 29, so a(4) = primepi(A214757(4)) = primepi(29) = 10.

%Y Cf. A000101, A104272, A214756, A001223.

%Y Cf. A002386, A214924, A214926, A214757.

%K nonn

%O 1,1

%A _John W. Nicholson_, Aug 06 2012

%E Extension to a(28) added by John W. Nicholson, Nov 11 2013