A178532 Partial sums of problimes (third definition, A003068).

2, 6, 13, 24, 39, 58, 81, 109, 142, 180, 223, 271, 324, 382, 445, 513, 586, 665, 750, 841, 938, 1041, 1150, 1265, 1386, 1513, 1646, 1785, 1930, 2081, 2238, 2401, 2570, 2745, 2926, 3113, 3306, 3505, 3710, 3921, 4138, 4362, 4593, 4831, 5076

Offset

1,1

Comments

The subsequence of prime partial sums of problimes begins: 2, 13, 109, 223, 271, 2081, 4831, 8233.

The subsequence of problime partial sums of problimes begins: 2, 58, 109.

Links

Table of n, a(n) for n=1..45.

Formula

SUM[i=1..n] A003068(i).

Example

a(12) = 2 + 4 + 7 + 11 + 15 + 19 + 23 + 28 + 33 + 38 + 43 + 48 = 271 is prime.

Crossrefs

Cf. A003068, A007504, A013918.

Sequence in context: A370880 A184533 A338991 * A003600 A283551 A362438

Adjacent sequences: A178529 A178530 A178531 * A178533 A178534 A178535

Keyword

nonn,easy

Author

Jonathan Vos Post, Dec 28 2010

Status

approved