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A042657 Denominators of continued fraction convergents to sqrt(858). 2
1, 3, 7, 24, 1399, 4221, 9841, 33744, 1966993, 5934723, 13836439, 47444040, 2765590759, 8344216317, 19454023393, 66706286496, 3888418640161, 11731962206979, 27352343054119, 93788991369336, 5467113842475607, 16495130518796157, 38457374880067921 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
G.f.: -(x^2-3*x-1)*(x^4+8*x^2+1) / (x^8-1406*x^4+1). - Colin Barker, Dec 20 2013
MATHEMATICA
Denominator[Convergents[Sqrt[858], 30]] (* Vincenzo Librandi, Jan 26 2014 *)
LinearRecurrence[{0, 0, 0, 1406, 0, 0, 0, -1}, {1, 3, 7, 24, 1399, 4221, 9841, 33744}, 30] (* Harvey P. Dale, Feb 19 2021 *)
CROSSREFS
Sequence in context: A300515 A041045 A041563 * A031875 A157817 A118718
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 20 2013
STATUS
approved

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Last modified April 14 07:30 EDT 2024. Contains 371655 sequences. (Running on oeis4.)