A010723 Period 2: repeat (6,7).

6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Comments

Continued fraction of 3 + sqrt(483)/7 = A176399. - R. J. Mathar, Nov 21 2011

Links

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

Programs

Mathematica

Table[6 + Mod[n, 2], {n, 0, 50}] (* Jinyuan Wang, Feb 26 2020 *)
PadRight[{},120,{6,7}] (* Harvey P. Dale, Mar 06 2024 *)

PARI

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

Formula

a(n) = -(1/2)*(-1)^n + 13/2. - Paolo P. Lava, Oct 27 2006

G.f. (-6-7*x) / ( (x-1)*(1+x) ). - R. J. Mathar, Nov 21 2011