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A022460
a(n) = prime(3*n) mod prime(n).
1
1, 1, 3, 2, 3, 9, 5, 13, 11, 26, 13, 3, 3, 9, 9, 11, 56, 7, 1, 68, 15, 1, 15, 3, 88, 94, 7, 5, 13, 11, 106, 110, 112, 1, 124, 140, 136, 130, 142, 140, 140, 158, 154, 164, 170, 190, 178, 158, 172, 176, 184, 194, 214, 200, 206, 208, 212, 220, 220, 226, 244
OFFSET
1,3
LINKS
FORMULA
a(n) = A031336(n) modulo A000040(n). - Michel Marcus, Sep 30 2013
MATHEMATICA
Table[Mod[Prime[3 n], Prime[n]], {n, 100}] (* Vincenzo Librandi, Dec 09 2014 *)
PROG
(PARI) a(n) = prime(3*n) % prime(n); \\ Michel Marcus, Sep 30 2013
(Magma) [NthPrime(3*n) mod NthPrime(n): n in [1..90]]; // Vincenzo Librandi, Dec 09 2014
CROSSREFS
Sequence in context: A216829 A331846 A332310 * A010605 A120879 A118064
KEYWORD
nonn
STATUS
approved