A229787 a(n) = n-th prime modulo 24.

2, 3, 5, 7, 11, 13, 17, 19, 23, 5, 7, 13, 17, 19, 23, 5, 11, 13, 19, 23, 1, 7, 11, 17, 1, 5, 7, 11, 13, 17, 7, 11, 17, 19, 5, 7, 13, 19, 23, 5, 11, 13, 23, 1, 5, 7, 19, 7, 11, 13, 17, 23, 1, 11, 17, 23, 5, 7, 13, 17, 19, 5, 19, 23, 1, 5, 19, 1, 11, 13, 17, 23, 7, 13, 19, 23, 5, 13, 17, 1, 11, 13, 23, 1, 7

Offset: 1

Author

Freimut Marschner, Sep 29 2013

Keywords

• nonn
• easy

Links

• Freimut Marschner, Table of n, a(n) for n = 1..1900

Crossrefs

Cf. similar sequences listed in A242119.

Programs

Magma

[p mod(24): p in PrimesUpTo(500)]; // Vincenzo Librandi, May 07 2014

Mathematica

Mod[Prime[Range[100]], 24] (* Vincenzo Librandi, May 07 2014 *)

PARI

a(n) = prime(n) % 24; \\ Joerg Arndt, Oct 01 2013

Formula

Sum_k={1..n} a(k) ~ 12*n. - Amiram Eldar, Dec 12 2024