login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A042313 Denominators of continued fraction convergents to sqrt(683). 2
1, 7, 15, 67, 216, 283, 499, 12758, 13257, 26015, 91302, 391223, 873748, 6507459, 339261616, 2381338771, 5101939158, 22789095403, 73469225367, 96258320770, 169727546137, 4339446974195, 4509174520332, 8848621494527, 31055039003913, 133068777510179 (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) = 340135364*a(n-14) - a(n-28) for n>27. - Vincenzo Librandi, Jan 20 2014

MATHEMATICA

Denominator[Convergents[Sqrt[683], 30]] (* Vincenzo Librandi, Jan 20 2014 *)

CROSSREFS

Cf. A042312.

Sequence in context: A039789 A279882 A171064 * A058206 A219523 A177128

Adjacent sequences:  A042310 A042311 A042312 * A042314 A042315 A042316

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 20 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 September 23 09:57 EDT 2020. Contains 337298 sequences. (Running on oeis4.)