A106078 - OEIS

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A106078

Primes p such that 5*p+4 and 4*p+5 are primes.

3, 17, 47, 83, 101, 113, 167, 251, 257, 281, 311, 467, 521, 593, 617, 677, 827, 857, 881, 1277, 1319, 1583, 1847, 2309, 2357, 2423, 2579, 2591, 2897, 2903, 3323, 3767, 3779, 3911, 4157, 4229, 4283, 4481, 4493, 4523, 4637, 4871, 5087, 5279, 5297, 5801, 5867

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

MATHEMATICA

Select[Prime[Range[220]], PrimeQ[4#+5]&&PrimeQ[5#+4]&]

PROG

(Magma) [p: p in PrimesUpTo(10000)| IsPrime(5*p+4) and IsPrime(4*p+5)] // Vincenzo Librandi, Nov 13 2010

CROSSREFS

Sequence in context: A108126 A106256 A091624 * A087908 A152472 A117012

Adjacent sequences: A106075 A106076 A106077 * A106079 A106080 A106081