A354159 Terms 2*p (p prime) in A090252, divided by 2, in order of appearance.

2, 13, 103, 239, 499, 1567, 3257, 6971, 14447, 30259, 63317, 130699

Offset: 1

Author

N. J. A. Sloane, May 30 2022

Keywords

• nonn
• more

Comments

By definition, 2*a(n) is a term in A354255.

Conjecture: the indices of the terms 2*p in A090252 are terms in A083329.

Examples

			The indices in A090252 of the initial terms 2*p, the terms 2*p themselves, and the primes p are [5, 4, 2], [47, 26, 13], [767, 206, 103], [3071, 478, 239].
		

Crossrefs

Cf. A083329, A090252, A354150, A354151, A354255.

Extensions

a(6)-a(8) from Michael S. Branicky, Jun 04 2022 using A354255

a(9)-a(11) from Hugo van der Sanden, Jun 14 2022

a(12) from Jinyuan Wang, Jul 15 2022