A071148 Partial sums of sequence of odd primes (A065091); a(n) = sum of the first n odd primes.

3, 8, 15, 26, 39, 56, 75, 98, 127, 158, 195, 236, 279, 326, 379, 438, 499, 566, 637, 710, 789, 872, 961, 1058, 1159, 1262, 1369, 1478, 1591, 1718, 1849, 1986, 2125, 2274, 2425, 2582, 2745, 2912, 3085, 3264, 3445, 3636, 3829, 4026, 4225, 4436, 4659, 4886

Offset: 1

Author

Labos Elemer, May 13 2002

Keywords

• nonn
• easy

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A007504, A013916, A013917, A013918, A065091.

Programs

Maple

ListTools:-PartialSums(select(isprime, [seq(i,i=3..1000,2)])); # Robert Israel, Feb 12 2017

Mathematica

Accumulate@ Prime@ Range[2, 49] (* Michael De Vlieger, Feb 12 2017 *)

PARI

a(n) = sum(k=1, n+1, prime(k)) - 2; \\ Michel Marcus, Feb 12 2017

Formula

a(n) = A007504(n+1) - 2.