A268879 a(n) is the least prime p=prime(m) such that gcd (prime(m) + 2, prime(m + 1) + 2) = 2*n - 1.

2, 31, 283, 2357, 1069, 8017, 16703, 7963, 88177, 39461, 129127, 101221, 452873, 153763, 525043, 473027, 283303, 1714963, 949307, 736279, 1232089, 7865171, 1138273, 20167369, 14402813, 12501067, 1098847, 3240983

Offset

1,1

Links

Zak Seidov, Table of n, a(n) for n = 1..50

Formula

a(n) = prime(A268863(n)) = A000040(A268863(n)).

Example

See A268863.

Crossrefs

Cf. A000040, A268863.

Sequence in context: A188225 A164676 A004307 * A120357 A333935 A152278

Adjacent sequences: A268876 A268877 A268878 * A268880 A268881 A268882

Keyword

nonn

Author

Zak Seidov, Feb 15 2016

Status

approved