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

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

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