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A090609 Primes of the form 6*p - 1 such that p and 6*p - 5 are primes. 5
11, 17, 41, 101, 113, 281, 317, 353, 401, 617, 677, 761, 941, 1433, 1613, 1697, 1877, 2273, 2297, 2381, 2693, 2801, 3461, 3677, 3701, 3881, 4937, 4973, 5441, 5573, 5861, 6581, 6737, 7673, 8237, 8681, 8933, 9137, 10181, 10337, 10733, 11261, 11597, 12101 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = 6*A089144(n) - 1.
PROG
(PARI) lista(nn) = forprime(p=2, nn, if(isprime(6*p-1)&&isprime(6*p-5), print1(6*p-1, ", "))); \\ Jinyuan Wang, Aug 04 2021
CROSSREFS
Sequence in context: A073649 A178070 A243222 * A187057 A187058 A144051
KEYWORD
nonn,easy
AUTHOR
Ray Chandler, Dec 06 2003
EXTENSIONS
Name clarified and offset changed to 1 by Jinyuan Wang, Aug 03 2021
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)