A090607 Primes of the form 6*p - 5 such that p and 6*p - 1 are primes.

7, 13, 37, 97, 109, 277, 313, 349, 397, 613, 673, 757, 937, 1429, 1609, 1693, 1873, 2269, 2293, 2377, 2689, 2797, 3457, 3673, 3697, 3877, 4933, 4969, 5437, 5569, 5857, 6577, 6733, 7669, 8233, 8677, 8929, 9133, 10177, 10333, 10729, 11257, 11593, 12097

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Formula

a(n) = 6*A089144(n) - 5.

Prog

(PARI) lista(nn) = forprime(p=2, nn, if(isprime(6*p-1)&&isprime(6*p-5), print1(6*p-5, ", "))); \\ Jinyuan Wang, Aug 04 2021

Crossrefs

Cf. A089144, A090606, A090608, A090609, A090610.

Sequence in context: A094069 A338812 A052378 * A201597 A158375 A144729

Adjacent sequences: A090604 A090605 A090606 * A090608 A090609 A090610

Keyword

nonn,easy

Author

Ray Chandler, Dec 06 2003

Extensions

Name clarified by Jinyuan Wang, Aug 03 2021

Status

approved