A106084 Primes p such that 5*p + 18 and 18*p + 5 are primes.

7, 13, 17, 19, 31, 41, 71, 73, 83, 89, 101, 167, 173, 227, 229, 283, 293, 307, 313, 353, 379, 383, 397, 419, 439, 523, 547, 563, 577, 659, 661, 827, 853, 937, 941, 953, 1063, 1097, 1153, 1237, 1307, 1483, 1567, 1571, 1583, 1667, 1669, 1721, 1783, 1861, 1877

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[220]], PrimeQ[18#+5]&&PrimeQ[5#+18]&]

Prog

(Magma) [p: p in PrimesUpTo(10000)| IsPrime(5*p+18) and IsPrime(18*p+5)]; // Vincenzo Librandi, Nov 13 2010

Crossrefs

Sequence in context: A032669 A231607 A147603 * A110053 A276045 A230039

Adjacent sequences: A106081 A106082 A106083 * A106085 A106086 A106087

Keyword

nonn

Author

Zak Seidov, May 07 2005

Extensions

More terms from Vincenzo Librandi, Apr 01 2010

Status

approved