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A045472 Primes congruent to {1, 6} mod 7. 5
13, 29, 41, 43, 71, 83, 97, 113, 127, 139, 167, 181, 197, 211, 223, 239, 251, 281, 293, 307, 337, 349, 379, 419, 421, 433, 449, 461, 463, 491, 503, 547, 587, 601, 617, 631, 643, 659, 673, 701, 727, 743, 757, 769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Appears to be the primes p such that p^4 mod 210 =1. [Gary Detlefs, Dec 29 2011]

Primes in A047336, also in A113801. [Reinhard Zumkeller, Jan 07 2012]

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Prime[Range[200]], MemberQ[{1, 6}, Mod[#, 7]]&] (* Vincenzo Librandi, Aug 13 2012 *)

PROG

(Haskell)

a045472 n = a045472_list !! (n-1)

a045472_list = [x | x <- a047336_list, a010051 x == 1]

-- Reinhard Zumkeller, Jan 07 2012

(MAGMA) [ p: p in PrimesUpTo(1000) | p mod 7 in {1, 6} ]; // Vincenzo Librandi, Aug 13 2012

CROSSREFS

Cf. A000040, A010051.

Sequence in context: A160026 A141555 A036974 * A240950 A141293 A120827

Adjacent sequences:  A045469 A045470 A045471 * A045473 A045474 A045475

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 22 08:58 EST 2018. Contains 298042 sequences.