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A070395
a(n) = 6^n mod 19.
2
1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9, 16, 1, 6, 17, 7, 4, 5, 11, 9
OFFSET
0,2
LINKS
FORMULA
From R. J. Mathar, Apr 20 2010: (Start)
a(n) = a(n-9).
G.f.: ( -1-6*x-17*x^2-7*x^3-4*x^4-5*x^5-11*x^6-9*x^7-16*x^8 ) / ( (x-1)*(1+x+x^2)*(x^6+x^3+1) ). (End)
MATHEMATICA
PowerMod[6, Range[0, 50], 19] (* G. C. Greubel, Mar 18 2016 *)
PROG
(Sage) [power_mod(6, n, 19)for n in range(0, 89)] # Zerinvary Lajos, Nov 27 2009
(PARI) a(n) = lift(Mod(6, 19)^n); \\ Altug Alkan, Mar 18 2016
CROSSREFS
Sequence in context: A065776 A323516 A120930 * A200871 A112366 A095421
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved