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A182494
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Decimal expansion of 9091/9901.
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1
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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
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OFFSET
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0,1
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COMMENTS
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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 = ....
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REFERENCES
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N. Anning, Title unknown, Scripta Math. 22 (1956), p. 227.
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LINKS
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EXAMPLE
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9091/9901 = 0.918190081809918190081809918....
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MATHEMATICA
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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 *)
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PROG
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(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
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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