1,2

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

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

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

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

Sequence in context: A117978 A119174 A326134 * A326484 A144945 A308585

Adjacent sequences: A343509 A343510 A343511 * A343513 A343514 A343515

nonn

Chai Wah Wu, Apr 17 2021

approved