login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A142009 Primes congruent to 5 mod 31. 1
5, 67, 191, 439, 563, 811, 997, 1307, 1493, 1741, 2113, 2237, 2423, 2609, 2671, 2857, 3167, 3229, 3539, 3911, 4159, 4283, 4903, 5399, 5647, 6143, 6329, 6577, 6701, 6763, 6949, 7321, 7507, 7817, 7879, 8623, 8747, 8933, 9181, 9491, 9677, 9739, 10111, 10607 (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) ~ 30n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Prime[Range[1300]], Mod[#, 31]==5&]  (* Harvey P. Dale, Mar 30 2011 *)

PROG

(MAGMA) [p: p in PrimesUpTo(12000) | p mod 31 eq 5 ]; // Vincenzo Librandi, Aug 17 2012

(PARI) is(n)=isprime(n) && n%31==5 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A059852 A057171 A185230 * A226412 A226343 A067393

Adjacent sequences:  A142006 A142007 A142008 * A142010 A142011 A142012

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 17 15:28 EDT 2019. Contains 324194 sequences. (Running on oeis4.)