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A014223 Odd primes such that (3p+1)/2 and 3p+4 are also prime. 1
3, 11, 19, 31, 59, 131, 151, 179, 311, 431, 439, 619, 739, 811, 839, 1039, 1231, 1399, 1531, 1699, 1879, 1951, 2111, 2351, 2411, 2671, 2699, 2719, 2819, 2939, 3259, 3391, 3491, 4211, 4259, 4639, 5039, 5779, 6151, 6359 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Prime[Range[2, 900]], And@@PrimeQ[{(3#+1)/2, 3#+4}]&] (* Harvey P. Dale, Nov 19 2011 *)

CROSSREFS

Sequence in context: A038536 A175122 A031369 * A023265 A018557 A270528

Adjacent sequences:  A014220 A014221 A014222 * A014224 A014225 A014226

KEYWORD

nonn

AUTHOR

Jud McCranie

STATUS

approved

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Last modified October 19 13:01 EDT 2019. Contains 328222 sequences. (Running on oeis4.)