OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (1, 0, 0, 0, -1, 1).
FORMULA
a(n)= +a(n-1) -a(n-5) +a(n-6), n>6. .G.f.: (x+2*x^2+4*x^3+8*x^4-5*x^5+11*x^6+1)/ ((1-x) * (1+x) * (x^4-x^3+x^2-x+1)). - R. J. Mathar, Apr 13 2010
MATHEMATICA
PowerMod[2, Range[0, 80], 22] (* Harvey P. Dale, Dec 11 2012 *)
PROG
(Sage) [power_mod(2, n, 22)for n in range(0, 84)] #
(PARI) a(n)=lift(Mod(2, 22)^n) \\ Charles R Greathouse IV, Mar 22 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Zerinvary Lajos, Nov 03 2009
STATUS
approved