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A243368 Primes p such that q = p^2 + 10 and q^2 + 10 are also prime. 0
7, 13, 211, 601, 743, 2281, 2659, 2897, 3109, 3361, 4271, 4397, 6173, 7321, 7351, 8807, 8863, 11941, 12377, 13033, 13159, 13999, 14449, 14951, 20117, 20161, 20551, 22709, 24109, 25733, 27299, 27749, 29989, 30071, 31123, 31541, 33347, 33377, 33487, 33629 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
This is a subsequence of A243367 where both p and p^2 + 10 are terms in A243367, see examples.
LINKS
EXAMPLE
p = a(1) = 7 = A243367(2) and p^2 + 10 = 59 = A243367(7),
p = a(2) = 13 = A243367(4) and p^2 + 10 = 179 = A243367(15).
PROG
(PARI) s=[]; forprime(p=2, 100000, q=p^2+10; if(isprime(q)&&isprime(q^2+10), s=concat(s, p))); s \\ Colin Barker, Jun 04 2014
CROSSREFS
Sequence in context: A247946 A210465 A181492 * A317209 A084963 A139188
KEYWORD
nonn
AUTHOR
Zak Seidov, Jun 04 2014
EXTENSIONS
More terms from Colin Barker, Jun 04 2014
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)