OFFSET
0,2
COMMENTS
Has period 20 (starting with a(2)=4).
LINKS
T. D. Noe, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,-1,1).
FORMULA
G.f.: -(50*x^12 +25*x^11 +13*x^10 -44*x^9 +28*x^8 -36*x^7 +32*x^6 +16*x^5 +8*x^4 +4*x^3 +2*x^2 +x +1) / ((x -1)*(x^2 +1)*(x^8 -x^6 +x^4 -x^2 +1)). - Colin Barker, Dec 01 2014
MATHEMATICA
PowerMod[2, Range[0, 60], 100] (* Harvey P. Dale, Jan 05 2012 *)
PROG
(PARI) a(n)=lift(Mod(2, 100)^n) \\ Charles R Greathouse IV, Dec 28 2012
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved