A142616 Primes congruent to 21 mod 55.

131, 241, 461, 571, 1231, 1451, 2111, 2221, 2441, 2551, 3541, 3761, 4091, 4201, 4421, 4751, 4861, 5081, 5521, 5741, 5851, 6841, 8161, 8821, 9041, 9151, 9371, 9811, 10141, 10691, 11131, 11351, 11681, 12011, 12451, 12671, 12781, 13001, 13331, 13441, 14321

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[2500]], MemberQ[{21}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 21]; // Vincenzo Librandi, Aug 31 2012

Crossrefs

Cf. A000040.

Sequence in context: A288410 A033206 A107001 * A207527 A132249 A033548

Adjacent sequences: A142613 A142614 A142615 * A142617 A142618 A142619

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved