A343512 Numbers k such that Sum_{i=1..k} prime(i^3) is prime.

1, 6, 28, 72, 90, 92, 96, 112, 118, 148, 160, 162, 184, 222, 282, 312, 314, 316, 330, 336, 390, 396, 418, 440, 444, 448, 472, 488, 524, 534, 552, 598, 604, 614, 638, 748, 758, 798, 824, 848, 906, 916, 970, 992, 1008, 1010, 1012, 1016, 1056, 1078, 1084, 1094, 1098

Offset

1,2

Comments

Numbers n such that A109789(n) is prime. For n > 1, a(n) is even.

Links

Chai Wah Wu, Table of n, a(n) for n = 1..1000

Example

72 is a term since Sum_{i=1..72} prime(i^3) = 94154923 is prime.

Crossrefs

Cf. A055875, A011757, A109724, A109770, A109789.

Sequence in context: A117978 A119174 A326134 * A326484 A144945 A308585

Adjacent sequences: A343509 A343510 A343511 * A343513 A343514 A343515

Keyword

nonn

Author

Chai Wah Wu, Apr 17 2021

Status

approved