A070391 - OEIS

A070391

a(n) = 5^n mod 46.

1, 5, 25, 33, 27, 43, 31, 17, 39, 11, 9, 45, 41, 21, 13, 19, 3, 15, 29, 7, 35, 37, 1, 5, 25, 33, 27, 43, 31, 17, 39, 11, 9, 45, 41, 21, 13, 19, 3, 15, 29, 7, 35, 37, 1, 5, 25, 33, 27, 43, 31, 17, 39, 11, 9, 45, 41, 21, 13, 19, 3, 15, 29, 7, 35, 37, 1, 5, 25, 33, 27, 43, 31, 17, 39

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OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (2, -2, 2, -2, 2, -2, 2, -2, 2, -2, 1).

FORMULA

a(n) = 2*a(n-1) -2*a(n-2) +2*a(n-3) -2*a(n-4) +2*a(n-5) -2*a(n-6) +2*a(n-7) -2*a(n-8) +2*a(n-9) -2*a(n-10) +a(n-11). - R. J. Mathar, Apr 20 2010

a(n) = a(n-22). - G. C. Greubel, Mar 18 2016

PROG

(Sage) [power_mod(5, n, 46)for n in range(0, 75)] # Zerinvary Lajos, Nov 26 2009

(PARI) a(n) = lift(Mod(5, 46)^n); \\ Altug Alkan, Mar 18 2016