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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, May 05 2014
STATUS
approved