A167420 2^n mod 14.

1, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8, 2, 4, 8

Offset: 0

Author

Zerinvary Lajos, Nov 03 2009

Keywords

• nonn
• easy

Links

• Index entries for linear recurrences with constant coefficients, signature (0,0,1).

Programs

Mathematica

PowerMod[2,Range[0,100],14] (* Harvey P. Dale, Jul 25 2011 *)

PARI

a(n)=lift(Mod(2,14)^n) \\ Charles R Greathouse IV, Mar 22 2016

Sage

[power_mod(2,n,14)for n in range(0,100)] #

Formula

G.f.: 1 + -2*x*(1+2*x+4*x^2) / ( (x-1)*(1+x+x^2) ). - R. J. Mathar, Jun 18 2019