A172981 Primes p such that 210*p+41 is also prime.

2, 5, 7, 11, 23, 29, 31, 53, 71, 79, 83, 89, 97, 107, 127, 131, 139, 151, 167, 191, 197, 211, 227, 229, 239, 241, 257, 269, 271, 277, 281, 283, 347, 349, 359, 379, 383, 409, 433, 449, 461, 499, 521, 587, 647, 673, 677, 709, 739, 743, 769, 787, 811, 823

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Prime[Range[1000]], PrimeQ[210 # + 41]&] (* Vincenzo Librandi, Dec 31 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(1000) | IsPrime(210*p+41)]; // Vincenzo Librandi, Dec 31 2013

Crossrefs

Cf. A140848.

Sequence in context: A040122 A318207 A038955 * A141064 A344990 A131102

Adjacent sequences: A172978 A172979 A172980 * A172982 A172983 A172984

Keyword

nonn,easy

Author

Vincenzo Librandi, Feb 06 2010

Extensions

Definition modified by Harvey P. Dale, Aug 21 2016

Status

approved