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!)
A042523 Denominators of continued fraction convergents to sqrt(790). 2
1, 9, 19, 28, 159, 187, 346, 1225, 5246, 6471, 31130, 37601, 181534, 582203, 763737, 1345940, 7493437, 8839377, 25172191, 235389096, 13206961567, 119098043199, 251403047965, 370501091164, 2103908503785, 2474409594949, 4578318098734, 16209363891151 (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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13232133758, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 13232133758*a(n-20) - a(n-40) for n>39. - Vincenzo Librandi, Jan 23 2014

MATHEMATICA

Denominator[Convergents[Sqrt[790], 30]] (* Vincenzo Librandi, Jan 23 2014 *)

CROSSREFS

Cf. A040761, A042522.

Sequence in context: A098791 A041156 A041369 * A347421 A037085 A088478

Adjacent sequences:  A042520 A042521 A042522 * A042524 A042525 A042526

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 23 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 20 22:20 EDT 2021. Contains 347596 sequences. (Running on oeis4.)