A106065 Primes p such that 1*p+18 and 18*p+1 are primes.

11, 29, 41, 71, 79, 139, 149, 181, 251, 379, 401, 431, 491, 569, 659, 701, 709, 809, 821, 991, 1021, 1051, 1231, 1289, 1381, 1471, 1549, 1759, 1871, 1931, 1999, 2069, 2221, 2251, 2381, 2459, 2591, 2671, 2711, 2909, 2939, 3301, 3371, 3499, 3511, 3539, 3709

Offset

1,1

Comments

Subsequence of A153418. - Michel Marcus, Dec 27 2014

Links

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

Mathematica

Select[Prime[Range[220]], PrimeQ[18#+1]&&PrimeQ[1#+18]&]

Prog

(Magma) [p: p in PrimesUpTo(10000)| IsPrime(p+18) and IsPrime(18*p+1)] // Vincenzo Librandi, Nov 13 2010

Crossrefs

Cf. A153418 (p and p+18 are prime).

Sequence in context: A087693 A106017 A343418 * A247089 A156110 A155188

Adjacent sequences: A106062 A106063 A106064 * A106066 A106067 A106068

Keyword

nonn

Author

Zak Seidov, May 07 2005

Status

approved