A242120 Primes modulo 20.

2, 3, 5, 7, 11, 13, 17, 19, 3, 9, 11, 17, 1, 3, 7, 13, 19, 1, 7, 11, 13, 19, 3, 9, 17, 1, 3, 7, 9, 13, 7, 11, 17, 19, 9, 11, 17, 3, 7, 13, 19, 1, 11, 13, 17, 19, 11, 3, 7, 9, 13, 19, 1, 11, 17, 3, 9, 11, 17, 1, 3, 13, 7, 11, 13, 17, 11, 17, 7, 9, 13, 19, 7

Offset

1,1

Links

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

Mathematica

Mod[Prime[Range[100]], 20]

Prog

(Magma) [p mod(20): p in PrimesUpTo(500)];
(Sage) [mod(p, 20) for p in primes(500)] # Bruno Berselli, May 05 2014

Crossrefs

Cf. similar sequences listed in A242119.

Sequence in context: A242122 A074721 A242121 * A259277 A152073 A331046

Adjacent sequences: A242117 A242118 A242119 * A242121 A242122 A242123

Keyword

nonn,easy

Author

Vincenzo Librandi, May 05 2014

Status

approved