login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A182494 Decimal expansion of 9091/9901. 1
9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9, 9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Periodic with period 12: repeat (9,1,8,1,9,0,0,8,1,8,0,9).
Also decimal expansion of 101010101/110010011 = 10101110101/11001110011 = 1010111110101/1100111110011 = ....
REFERENCES
N. Anning, Title unknown, Scripta Math. 22 (1956), p. 227.
LINKS
Arkadiusz Wesolowski, Table of n, a(n) for n = 0..10000
EXAMPLE
9091/9901 = 0.918190081809918190081809918....
MATHEMATICA
RealDigits[N[9091/9901, 200]][[1]]
Flatten@Table[{9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9}, {16}]
LinearRecurrence[{1, 0, 0, 0, 0, -1, 1}, {9, 1, 8, 1, 9, 0, 0}, 108] (* Ray Chandler, Aug 27 2015 *)
PROG
(PARI) A182494(n)=[9, 1, 8, 1, 9, 0, 0, 8, 1, 8, 0, 9][abs(n)%12+1] \\ - M. F. Hasler, Jul 01 2012
CROSSREFS
Sequence in context: A200101 A084002 A339605 * A065444 A010169 A113657
KEYWORD
cons,easy,nonn
AUTHOR
EXTENSIONS
Extended by Ray Chandler, Aug 27 2015
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)