A379806 Numbers k such that 2^prime(k) - 3 is prime.

2, 3, 10, 51, 4462, 6883

Offset: 1

Author

N. J. A. Sloane, Feb 01 2025

Keywords

• nonn
• more

Examples

			Prime(3) = 5 and 2^5 - 3 = 29 is prime, so k = 3 is a member.
		

Crossrefs

Cf. A000720, A050414, A283266.

Programs

PARI

isok(k) = ispseudoprime(1<Jinyuan Wang, Feb 09 2025

Formula

Apply PrimePi to A283266.