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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

Index entries for linear recurrences with constant coefficients, signature (1, 0, 0, 0, 0, -1, 1).

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: A154207 A200101 A084002 * A065444 A010169 A113657

Adjacent sequences:  A182491 A182492 A182493 * A182495 A182496 A182497

KEYWORD

cons,easy,nonn

AUTHOR

Arkadiusz Wesolowski, May 02 2012

EXTENSIONS

Extended by Ray Chandler, Aug 27 2015

STATUS

approved

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Last modified November 17 13:12 EST 2019. Contains 329230 sequences. (Running on oeis4.)