A070385 a(n) = 5^n mod 38.

1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23, 1, 5, 25, 11, 17, 9, 7, 35, 23

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 (0,0,0,0,0,0,0,0,1). [R. J. Mathar, Apr 20 2010]

Formula

From R. J. Mathar, Apr 20 2010: (Start)

a(n) = a(n-9).

G.f.: ( -1-5*x-25*x^2-11*x^3-17*x^4-9*x^5-7*x^6-35*x^7-23*x^8 ) / ( (x-1)*(1+x+x^2)*(x^6+x^3+1) ). (End)

Mathematica

PowerMod[5, Range[0, 50], 38] (* G. C. Greubel, Mar 16 2016 *)

Prog

(Sage) [power_mod(5, n, 38) for n in range(0, 81)] # Zerinvary Lajos, Nov 26 2009
(PARI) a(n) = lift(Mod(5, 38)^n); \\ Altug Alkan, Mar 16 2016

Crossrefs

Sequence in context: A050084 A070379 A143254 * A328756 A070378 A070384

Adjacent sequences: A070382 A070383 A070384 * A070386 A070387 A070388

Keyword

nonn

Author

N. J. A. Sloane, May 12 2002

Status

approved