A070364 a(n) = 3^n mod 47.

1, 3, 9, 27, 34, 8, 24, 25, 28, 37, 17, 4, 12, 36, 14, 42, 32, 2, 6, 18, 7, 21, 16, 1, 3, 9, 27, 34, 8, 24, 25, 28, 37, 17, 4, 12, 36, 14, 42, 32, 2, 6, 18, 7, 21, 16, 1, 3, 9, 27, 34, 8, 24, 25, 28, 37, 17, 4, 12, 36, 14, 42, 32, 2, 6, 18, 7, 21, 16, 1, 3, 9, 27, 34, 8, 24, 25, 28, 37

Offset: 0

Author

N. J. A. Sloane, May 12 2002

Keywords

• nonn
• easy

Links

• G. C. Greubel, Table of n, a(n) for n = 0..1000
• Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).

Programs

Mathematica

PowerMod[3, Range[0,50], 47] (* or *) Table[Mod[3^n, 47], {n, 0, 100}] (* G. C. Greubel, Mar 09 2016 *)

PARI

a(n)=lift(Mod(3,47)^n) \\ Charles R Greathouse IV, Mar 22 2016

Formula

a(n) = a(n-23). - R. J. Mathar, Apr 20 2010