A034938 Primes p such that (p-3)/2 is a prime of the form 6k-1.

13, 37, 61, 97, 109, 181, 229, 277, 337, 349, 397, 457, 541, 709, 769, 937, 1009, 1021, 1117, 1129, 1201, 1237, 1297, 1321, 1489, 1549, 1597, 1621, 1657, 1777, 1861, 2029, 2221, 2377, 2389, 2437, 2521, 2557, 2617, 2749, 2857, 3001, 3049

Offset: 1

Author

Jud McCranie

Keywords

• nonn
• easy

Comments

Related to hyperperfect numbers of a certain form (form 1, theorem 1 in "A Study of Hyperperfect Numbers").

Links

• Robert Price, Table of n, a(n) for n = 1..10000
• J. S. McCranie, A study of hyperperfect numbers, J. Int. Seqs. Vol. 3 (2000) #P00.1.3.

Crossrefs

Cf. A038536 and A034937.

Programs

Mathematica

Select[Prime[Range[500]],Mod[(#-3)/2,6]==5&&PrimeQ[(#-3)/2]&] (* Harvey P. Dale, Jul 27 2019 *)

Extensions

Definition corrected by Jud McCranie, Jul 26 2019