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 (0,0,0,0,1).
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
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
(Sage) [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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved