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, 0, 0, 1).
FORMULA
From R. J. Mathar, Apr 13 2010: (Start)
a(n) = a(n-11).
G.f.: (1 + 2*x + 4*x^2 + 8*x^3 + 16*x^4 + 9*x^5 + 18*x^6 + 13*x^7 + 3*x^8 + 6*x^9 + 12*x^10)/ ((1-x) * (1 + x + x^2 + x^3 + x^4 + x^5 + x^6 + x^7 + x^8 + x^9 + x^10)). (End)
MAPLE
A070335 := proc(n) op(1+(n mod 11), [1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12]) ; end proc: # R. J. Mathar, Feb 05 2011
MATHEMATICA
PowerMod[2, Range[0, 50], 23] (* G. C. Greubel, Mar 13 2016 *)
PROG
(Sage) [power_mod(2, n, 23) for n in range(0, 80)] # Zerinvary Lajos, Nov 03 2009
(PARI) a(n)=lift(Mod(2, 23)^n) \\ Charles R Greathouse IV, Apr 06 2016
(GAP) a:=List([0..70], n->PowerMod(2, n, 23));; Print(a); # Muniru A Asiru, Jan 26 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved