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A034938 Primes p such that (p-3)/2 is a prime of the form 6k-1. 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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..43.

J. S. McCranie, A study of hyperperfect numbers, J. Int. Seqs. Vol. 3 (2000) #P00.1.3.

MATHEMATICA

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

CROSSREFS

Cf. A038536 and A034937.

Sequence in context: A141122 A068228 A031339 * A139530 A138368 A118071

Adjacent sequences: A034935 A034936 A034937 * A034939 A034940 A034941

KEYWORD

nonn,easy

AUTHOR

Jud McCranie

EXTENSIONS

Definition corrected by Jud McCranie, Jul 26 2019

STATUS

approved

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Last modified January 31 01:17 EST 2023. Contains 359947 sequences. (Running on oeis4.)