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A145196 Partial sums of number of primes < n-th-prime p such that p+4 is prime. 0

%I #4 Jul 12 2012 00:39:50

%S 0,0,1,2,4,6,9,12,16,20,24,28,33,38,44,50,56,62,68,75,82,89,97,105,

%T 113,122,131,141,151,162,173,185,197,209,221,233,245,257,270,283,296,

%U 309,322,335,349,363,377,391,406,421,437,453,469,485,501,517,533,549,565

%N Partial sums of number of primes < n-th-prime p such that p+4 is prime.

%F a(n) = sum_{i=1..n} A139789(i). [From _R. J. Mathar_, Nov 03 2008]

%Y Cf. A139789.

%K nonn

%O 1,4

%A _Giovanni Teofilatto_, Oct 04 2008

%E More terms from _R. J. Mathar_, Nov 03 2008

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Last modified April 24 08:28 EDT 2024. Contains 371927 sequences. (Running on oeis4.)