A141726 Sawtooth with period length 9: repeat 8, 7, 6, 5, 4, 3, 2, 1, 0.

8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3

Offset

1,1

Comments

Continued fraction expansion of (23342+5*sqrt(44403565))/6961.

Decimal expansion of 973936900/111111111.

Links

Table of n, a(n) for n=1..105.

Formula

a(n) = a(n-9).

G.f.: -x*(8+7*x+6*x^2+5*x^3+4*x^4+3*x^5+2*x^6+x^7)/((x-1)*(1+x+x^2)*(x^6+x^3+1)).

Mathematica

PadRight[{}, 120, Range[8, 0, -1]] (* Harvey P. Dale, Dec 23 2020 *)

Prog

(Python)
def A141726(n): return (0, 8, 7, 6, 5, 4, 3, 2, 1)[n%9] # Chai Wah Wu, Jan 10 2023

Crossrefs

Cf. A010878.

Sequence in context: A138472 A022964 A023450 * A307339 A031310 A161813

Adjacent sequences: A141723 A141724 A141725 * A141727 A141728 A141729

Keyword

nonn,easy

Author

Paul Curtz, Sep 13 2008

Extensions

Index in c-sequence corrected by R. J. Mathar, Sep 11 2009

Status

approved