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A106078 Primes p such that 5*p+4 and 4*p+5 are primes. 0
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 (list; graph; refs; listen; history; text; internal format)
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

KEYWORD

nonn

AUTHOR

Zak Seidov, May 07 2005

EXTENSIONS

More terms from Vincenzo Librandi, Apr 01 2010

STATUS

approved

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Last modified May 16 19:46 EDT 2021. Contains 343951 sequences. (Running on oeis4.)