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A142312 Primes congruent to 1 mod 45. 2
181, 271, 541, 631, 811, 991, 1171, 1531, 1621, 1801, 2161, 2251, 2341, 2521, 2791, 2971, 3061, 3331, 3511, 3691, 4051, 4231, 4591, 4861, 4951, 5581, 5851, 6121, 6211, 6301, 6481, 6571, 6661, 6841, 7561, 7741, 8011, 8101, 8191, 8461, 8641, 8731, 8821, 9001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

FORMULA

a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 02 2016

MATHEMATICA

Select[Prime[Range[3000]], MemberQ[{1}, Mod[#, 45]]&] (* Vincenzo Librandi, Aug 25 2012 *)

Select[Range[1, 10000, 45], PrimeQ] (* Harvey P. Dale, Mar 10 2016 *)

PROG

(MAGMA) [p: p in PrimesUpTo(10000) | p mod 45 eq 1]; // Vincenzo Librandi, Aug 25 2012

(PARI) is(n)=isprime(n) && n%45==1 \\ Charles R Greathouse IV, Jul 02 2016

CROSSREFS

Cf. A000040.

Sequence in context: A142519 A053140 A107694 * A020360 A238670 A168473

Adjacent sequences:  A142309 A142310 A142311 * A142313 A142314 A142315

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified January 17 09:54 EST 2020. Contains 330949 sequences. (Running on oeis4.)