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 A238699 Primes p such that 2p + 3 and 4p + 3 are both prime. 1
 2, 5, 7, 17, 19, 47, 67, 89, 157, 227, 229, 307, 349, 439, 467, 487, 509, 599, 647, 797, 929, 1039, 1187, 1217, 1237, 1259, 1307, 1427, 1447, 1567, 1789, 2027, 2309, 2467, 2539, 2707, 2789, 2819, 3167, 3457, 3499, 3659, 3877, 3919, 4057, 4079, 4157, 4289, 4297 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Intersection of A023204 and A023213. Primes in A115334. LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 EXAMPLE 89 is in the sequence because 2*89 + 3 = 181 and 4*89 + 3 = 359 are both prime. PROG (MAGMA) [p: p in PrimesUpTo(4500) | IsPrime(2*p+3) and IsPrime(4*p+3)]; // Bruno Berselli, Mar 03 2014 (PARI) select(p->isprime(2*p+3)&&isprime(4*p+3), primes(1000)) \\ Charles R Greathouse IV, Mar 06 2014 CROSSREFS Cf. A023204, A023213; A115334. Sequence in context: A158526 A146364 A105895 * A023517 A068360 A110254 Adjacent sequences:  A238696 A238697 A238698 * A238700 A238701 A238702 KEYWORD nonn AUTHOR Ilya Lopatin, Mar 03 2014, following a suggestion by Juri-Stepan Gerasimov EXTENSIONS Edited by Bruno Berselli, Mar 03 2014 STATUS approved

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Last modified May 24 15:25 EDT 2019. Contains 323532 sequences. (Running on oeis4.)