A010677 Period 2: repeat (0,6).

0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0, 6, 0

Offset

0,2

Links

Table of n, a(n) for n=0..80.

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

Formula

a(n) = 3*[1-(-1)^n] = 6*(n mod 2). - Paolo P. Lava, Oct 20 2006

G.f. 6x/((1-x)(1+x)). - R. J. Mathar, Nov 21 2011

Mathematica

Table[6 Mod[n, 2], {n, 0, 50}] (* Jinyuan Wang, Feb 26 2020 *)
PadRight[{}, 100, {0, 6}] (* Harvey P. Dale, Aug 10 2023 *)

Prog

(PARI) a(n)=n%2*6 \\ Charles R Greathouse IV, Jul 13 2016

Crossrefs

Sequence in context: A280508 A217221 A158090 * A021169 A303494 A198368

Adjacent sequences: A010674 A010675 A010676 * A010678 A010679 A010680

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved