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A010734 Constant sequence: the all 9's sequence. 10
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 October 23 20:10 EDT 2017. Contains 293813 sequences.