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A010734 Constant sequence: the all 9's sequence. 9
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The digital root of 9^n gives the sequence 1,9,9,9,9,... - Cino Hilliard, Dec 31 2004

Continued fraction expansion of (9+sqrt(85))/2.  - Bruno Berselli, Mar 15 2011

LINKS

Table of n, a(n) for n=0..80.

Tanya Khovanova, Recursive Sequences

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 1017

A. Norton, Michael Baldwin, Does 0.999... really equal 1?, The Math Educ. 21 (2) (2012) 58-67.

Index to divisibility sequences

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

FORMULA

G.f.: 9/(1-x).  - Bruno Berselli, Mar 15 2011

Equals A158289(n) + A199264(n). [Arkadiusz Wesolowski, Nov 30 2011]

E.g.f.: 9*e^x. - Vincenzo Librandi, Jan 26 2012

MATHEMATICA

Table[9, {81}] (* Arkadiusz Wesolowski, Nov 30 2011 *)

PROG

(PARI) a(n)=9 \\ Charles R Greathouse IV, Oct 07 2015

CROSSREFS

Sequence in context: A099646 A181693 A271880 * A180599 A291092 A066568

Adjacent sequences:  A010731 A010732 A010733 * A010735 A010736 A010737

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 21 21:36 EDT 2017. Contains 290908 sequences.