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A142616 Primes congruent to 21 mod 55. 1
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 4 13:24 EDT 2020. Contains 336201 sequences. (Running on oeis4.)