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A124850 Primes p=n/2 such that 7n+3 and 3n+7 are primes. 1
2, 5, 11, 17, 29, 37, 61, 67, 71, 89, 167, 191, 199, 229, 269, 277, 311, 331, 337, 347, 379, 389, 419, 431, 509, 541, 577, 587, 617, 631, 691, 709, 757, 797, 809, 821, 929, 941, 977, 991, 1069, 1091, 1117, 1129, 1217, 1277, 1279, 1289, 1291, 1367, 1439 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Cf. A089033, A089953, A124849.

Sequence in context: A289250 A278049 A007491 * A156850 A156611 A143509

Adjacent sequences:  A124847 A124848 A124849 * A124851 A124852 A124853

KEYWORD

nonn

AUTHOR

Zak Seidov, Nov 10 2006

STATUS

approved

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Last modified December 7 00:45 EST 2019. Contains 329817 sequences. (Running on oeis4.)