# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a106078 Showing 1-1 of 1 %I A106078 #15 Sep 08 2022 08:45:17 %S A106078 3,17,47,83,101,113,167,251,257,281,311,467,521,593,617,677,827,857, %T A106078 881,1277,1319,1583,1847,2309,2357,2423,2579,2591,2897,2903,3323,3767, %U A106078 3779,3911,4157,4229,4283,4481,4493,4523,4637,4871,5087,5279,5297,5801,5867 %N A106078 Primes p such that 5*p+4 and 4*p+5 are primes. %t A106078 Select[Prime[Range[220]], PrimeQ[4#+5]&&PrimeQ[5#+4]&] %o A106078 (Magma) [p: p in PrimesUpTo(10000)| IsPrime(5*p+4) and IsPrime(4*p+5)] // _Vincenzo Librandi_, Nov 13 2010 %K A106078 nonn %O A106078 1,1 %A A106078 _Zak Seidov_, May 07 2005 %E A106078 More terms from _Vincenzo Librandi_, Apr 01 2010 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE