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A070380
a(n) = 5^n mod 32.
1
1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9, 13, 1, 5, 25, 29, 17, 21, 9
OFFSET
0,2
FORMULA
From R. J. Mathar, Apr 20 2010: (Start)
a(n) = a(n-8).
G.f.: ( -1-5*x-25*x^2-29*x^3-17*x^4-21*x^5-9*x^6-13*x^7 ) / ( (x-1)*(1+x)*(x^2+1)*(x^4+1) ). (End)
MATHEMATICA
PowerMod[5, Range[0, 50], 32] (* G. C. Greubel, Mar 16 2016 *)
PROG
(Sage) [power_mod(5, n, 32)for n in range(0, 79)] # Zerinvary Lajos, Nov 26 2009
(PARI) a(n) = lift(Mod(5, 32)^n); \\ Altug Alkan, Mar 16 2016
CROSSREFS
Sequence in context: A137111 A137110 A036137 * A068574 A000350 A000221
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved