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A010734 Constant sequence: the all 9's sequence. 12
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, 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
Continued fraction expansion of (9 + sqrt(85))/2. - Bruno Berselli, Mar 15 2011
Also decimal expansion of 0.9999... = 1. - Jianing Song, Jul 12 2018
Contains "SUB[48]: 200 Terabytes of nines", proposed in Randall Munroe's xkcd Web Comic #2016 as a subsequence. - Hugo Pfoertner, Jul 15 2018
Also digits of the 10-adic integer -1. - Stefano Spezia, Jan 21 2021
LINKS
Tanya Khovanova, Recursive Sequences
Randall Munroe, OEIS Submissions, xkcd Web Comic #2016, Jul 06 2018.
Anderson Norton and Michael Baldwin, Does 0.999... really equal 1?, The Math Educ. 21 (2) (2012) 58-67.
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 *)
IntegerDigits[10^100 - 1] (* Alonso del Arte, Jul 09 2018 *)
PadRight[{}, 120, 9] (* Harvey P. Dale, Jan 28 2020 *)
PROG
(PARI) a(n)=9 \\ Charles R Greathouse IV, Oct 07 2015
(Scala) List.fill(100)(9) // Alonso del Arte, Jul 08 2018
CROSSREFS
Sequence in context: A271880 A180599 A291092 * A066568 A291514 A106326
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)