A010708 Period 2: repeat [3,10].

3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10, 3, 10

Offset

0,1

Comments

Continued fraction expansion of A176109.

Links

Table of n, a(n) for n=0..65.

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

Formula

a(n) = -7/2*(-1)^n + 13/2. - Paolo P. Lava, Oct 20 2006

G.f. (3+10x)/((1-x)*(1+x)). - R. J. Mathar, Nov 21 2011

a(n+2) = a(n). - Wesley Ivan Hurt, May 26 2024

Mathematica

PadRight[{}, 100, {3, 10}] (* Harvey P. Dale, Oct 31 2015 *)

Prog

(PARI) a(n)=3+n%2*7 \\ Charles R Greathouse IV, Dec 21 2011

Crossrefs

Cf. A176109.

Sequence in context: A091043 A321118 A167790 * A072988 A170855 A338683

Adjacent sequences: A010705 A010706 A010707 * A010709 A010710 A010711

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved