A010735 Period 2: repeat (9,10).

9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10, 9, 10

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Comments

Continued fraction expansion of A176523. - R. J. Mathar, Mar 08 2012

Links

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

Programs

Mathematica

Table[9 + Mod[n, 2], {n, 0, 50}] (* Jinyuan Wang, Feb 26 2020 *)
PadRight[{},70,{9,10}] (* Harvey P. Dale, Sep 23 2021 *)

PARI

a(n)=n%2+9 \\ Charles R Greathouse IV, Jul 13 2016

Formula

G.f. ( -9-10*x ) / ( (x-1)*(1+x) ). - R. J. Mathar, Nov 21 2011