A070720 a(n) = n^7 mod 39.

0, 1, 11, 3, 4, 8, 33, 19, 5, 9, 10, 2, 12, 13, 14, 24, 16, 17, 21, 7, 32, 18, 22, 23, 15, 25, 26, 27, 37, 29, 30, 34, 20, 6, 31, 35, 36, 28, 38, 0, 1, 11, 3, 4, 8, 33, 19, 5, 9, 10, 2, 12, 13, 14, 24, 16, 17, 21, 7, 32, 18, 22, 23, 15, 25, 26, 27, 37, 29, 30, 34, 20, 6, 31, 35, 36

Offset

0,3

Links

Table of n, a(n) for n=0..75.

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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).

Formula

a(n) = a(n-39). - Wesley Ivan Hurt, Jul 17 2025

Mathematica

PowerMod[Range[0, 80], 7, 39] (* Harvey P. Dale, Nov 20 2023 *)

Prog

(SageMath) [power_mod(n, 7, 39)for n in range(0, 76)] # - Zerinvary Lajos, Oct 29 2009
(PARI) a(n)=n^7%39 \\ Charles R Greathouse IV, Apr 06 2016

Crossrefs

Sequence in context: A177415 A208091 A070695 * A010189 A338716 A071234

Adjacent sequences: A070717 A070718 A070719 * A070721 A070722 A070723

Keyword

nonn,easy

Author

N. J. A. Sloane, May 13 2002

Status

approved