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URL: https://oeis.org/A070375

⇱ A070375 - OEIS

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A070375
a(n) = 5^n mod 22.
1
1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15, 9, 1, 5, 3, 15
OFFSET
0,2
FORMULA
From R. J. Mathar, Apr 20 2010: (Start)
a(n) = a(n-5).
G.f.: ( -1-5*x-3*x^2-15*x^3-9*x^4 ) / ( (x-1)*(1+x+x^2+x^3+x^4) ). (End)
MAPLE
A070375:=n->5^n mod 22: seq(A070375(n), n=0..100); # Wesley Ivan Hurt, Mar 13 2016
MATHEMATICA
PowerMod[5, Range[0, 50], 22] (* G. C. Greubel, Mar 13 2016 *)
PadRight[{}, 120, {1, 5, 3, 15, 9}] (* Harvey P. Dale, Sep 30 2019 *)
PROG
(SageMath) [power_mod(5, n, 22) for n in range(0, 94)] # Zerinvary Lajos, Nov 26 2009
(PARI) a(n)=lift(Mod(5, 22)^n) \\ Charles R Greathouse IV, Mar 22 2016
CROSSREFS
Sequence in context: A329029 A248983 A298975 * A166465 A162813 A146934
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved