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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A042663 Denominators of continued fraction convergents to sqrt(861). 2
1, 2, 3, 35, 493, 528, 1021, 2570, 6161, 14892, 21053, 35945, 524283, 5803058, 6327341, 18457740, 1076876261, 2172210262, 3249086523, 37912162015, 534019354733, 571931516748, 1105950871481, 2783833259710, 6673617390901, 16131068041512, 22804685432413 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

FORMULA

a(n) = 1083203602*a(n-16) - a(n-32) for n>31. - Vincenzo Librandi, Jan 26 2014

MATHEMATICA

Denominator[Convergents[Sqrt[861], 30]] (* Vincenzo Librandi, Jan 26 2014 *)

CROSSREFS

Cf. A040831, A042662.

Sequence in context: A234423 A165448 A111459 * A072291 A325500 A084191

Adjacent sequences:  A042660 A042661 A042662 * A042664 A042665 A042666

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 26 2014

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 June 25 17:47 EDT 2019. Contains 324353 sequences. (Running on oeis4.)