login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 1406, 0, 0, 0, -1).

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 *)

CROSSREFS

Cf. A042656, A040828.

Sequence in context: A300515 A041045 A041563 * A031875 A157817 A118718

Adjacent sequences:  A042654 A042655 A042656 * A042658 A042659 A042660

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 20 2013

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 23 07:46 EDT 2019. Contains 323508 sequences. (Running on oeis4.)