A321178 One-half the sum of the first 2n + 1 primes.

1, 5, 14, 29, 50, 80, 119, 164, 220, 284, 356, 437, 530, 632, 740, 860, 994, 1138, 1292, 1457, 1633, 1819, 2014, 2219, 2444, 2675, 2915, 3169, 3435, 3709, 3991, 4291, 4603, 4927, 5269, 5620, 5983, 6359, 6745, 7144, 7558, 7984, 8420, 8866, 9325, 9790, 10273

Offset: 0

Author

Martin Michael Musatov, Oct 29 2018

Keywords

• nonn

Links

• Ray Chandler, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A000040, A001223, A007504, A109723.

Formula

a(n) = A109723(n)/2 = A007504(2n+1)/2.