The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A142792 Primes congruent to 31 mod 60. 2
 31, 151, 211, 271, 331, 571, 631, 691, 751, 811, 991, 1051, 1171, 1231, 1291, 1471, 1531, 1831, 1951, 2011, 2131, 2251, 2311, 2371, 2551, 2671, 2731, 2791, 2851, 2971, 3271, 3331, 3391, 3511, 3571, 3631, 3691, 3931, 4051, 4111, 4231, 4591, 4651, 4831, 4951 (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) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016 MATHEMATICA Select[Prime[Range[1000]], Mod[#, 60]==31&] (* Harvey P. Dale, Mar 14 2011 *) Select[Prime[Range[800]], MemberQ[{31}, Mod[#, 60]] &] (* Vincenzo Librandi, Sep 04 2012 *) Select[Range[31, 5000, 60], PrimeQ] (* Faster because it tests fewer numbers than the programs above *) (* Harvey P. Dale, Nov 13 2013 *) PROG (Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 31 ]; // Vincenzo Librandi, Sep 04 2012 (PARI) is(n)=isprime(n) && n%60==31 \\ Charles R Greathouse IV, Jul 03 2016 CROSSREFS Cf. A000040. Sequence in context: A124994 A126418 A347109 * A201964 A226890 A104049 Adjacent sequences: A142789 A142790 A142791 * A142793 A142794 A142795 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 29 22:15 EDT 2023. Contains 361599 sequences. (Running on oeis4.)