A053449 Multiplicative order of 6 mod n, where gcd(n, 6) = 1.

1, 1, 2, 10, 12, 16, 9, 11, 5, 14, 6, 2, 4, 40, 3, 23, 14, 26, 10, 58, 60, 12, 33, 35, 36, 10, 78, 82, 16, 88, 12, 9, 12, 10, 102, 106, 108, 112, 11, 16, 110, 25, 126, 130, 18, 136, 23, 60, 14, 37, 150, 6, 156, 22, 27, 83, 156, 43, 10, 178, 60, 4, 80, 19, 96, 14, 198, 14, 40

Offset: 1

Author

David W. Wilson

Keywords

• nonn

Comments

Essentially the same as A050978. [R. J. Mathar, Oct 13 2008]

Links

• Muniru A Asiru, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A050978.

Programs

GAP

List(Filtered([1..210],n->Gcd(n,6)=1),n->OrderMod(6,n)); # Muniru A Asiru, Feb 17 2019

Mathematica

MultiplicativeOrder[6, #] & /@ Select[ Range@ 200, GCD[#, 6] == 1 &] (* Robert G. Wilson v, Apr 05 2011 *)

PARI

lista(nn) = {for(n=1, nn, if (gcd(n, 6) == 1, print1(znorder(Mod(6, n)), ", ")););} \\ Michel Marcus, Feb 09 2015