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A108313 Sum of primes q with prime(n) < q < 2*prime(n). 1

%I #8 Jul 31 2015 01:16:14

%S 3,5,7,24,49,59,102,120,181,252,341,515,553,593,635,883,1153,1092,

%T 1283,1488,1415,1793,1873,2124,2771,3066,2963,3067,2958,3068,4361,

%U 4487,5153,5291,5999,5848,6622,6776,6940,7104,7974,8152,9080,9270,9462,9660,11099

%N Sum of primes q with prime(n) < q < 2*prime(n).

%C Sum of the numbers not killed in the first jump of a Sieve of Eratosthenes table. - _Odimar Fabeny_, Jul 21 2010

%e a(3) = 24 because between 7 and 14 there are two primes 11 and 13 whose sum is 24.

%t f[n_] := Plus @@ Prime[Range[n + 1, PrimePi[2Prime[n]]]]; Table[ f[n], {n, 40}] (* _Robert G. Wilson v_, Jul 01 2005 *)

%K easy,nonn

%O 1,1

%A _Giovanni Teofilatto_, Jun 30 2005

%E Edited and extended by _Robert G. Wilson v_, Jul 01 2005

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)