OFFSET
1,1
LINKS
FORMULA
MATHEMATICA
Table[Mod[Mod[Mod[Mod[Prime[k], 6], 5], 3], 2], {k, 1, 120}]
a[n_] := Boole[Mod[Prime[n], 6] == 1]; Array[a, 120] (* Amiram Eldar, Mar 14 2025 *)
PROG
(PARI) a(n) = (prime(n) % 6) == 1; \\ Michel Marcus, Jun 26 2019
CROSSREFS
KEYWORD
nonn,easy,changed
AUTHOR
Joseph Biberstine (jrbibers(AT)indiana.edu), Nov 19 2004
STATUS
approved