A124850 Primes p=n/2 such that 7n+3 and 3n+7 are primes.

2, 5, 11, 17, 29, 37, 61, 67, 71, 89, 167, 191, 199, 229, 269, 277, 311, 331, 337, 347, 379, 389, 419, 431, 509, 541, 577, 587, 617, 631, 691, 709, 757, 797, 809, 821, 929, 941, 977, 991, 1069, 1091, 1117, 1129, 1217, 1277, 1279, 1289, 1291, 1367, 1439

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Prime[Range[250]], AllTrue[{14#+3, 6#+7}, PrimeQ]&] (* Harvey P. Dale, Mar 10 2022 *)

Crossrefs

Cf. A089033, A089953, A124849.

Sequence in context: A289250 A278049 A007491 * A156850 A156611 A143509

Adjacent sequences: A124847 A124848 A124849 * A124851 A124852 A124853

Keyword

nonn

Author

Zak Seidov, Nov 10 2006

Status

approved