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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A041830 Numerators of continued fraction convergents to sqrt(436). 2
20, 21, 167, 355, 522, 877, 1399, 19064, 58591, 136246, 331083, 1791661, 2122744, 3914405, 17780364, 181718045, 744652544, 926370589, 1671023133, 9281486254, 20233995641, 49749477536, 169482428249 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

FORMULA

a(n) = 316141343972498*a(n-30) - a(n-60) for n>59. [Bruno Berselli, Nov 09 2013

MATHEMATICA

Numerator[Convergents[Sqrt[436], 30]] (* Vincenzo Librandi, Nov 09 2013 *)

CROSSREFS

Cf. A041831.

Sequence in context: A041824 A037308 A041828 * A041832 A082260 A041834

Adjacent sequences:  A041827 A041828 A041829 * A041831 A041832 A041833

KEYWORD

nonn,cofr,frac,easy,less

AUTHOR

N. J. A. Sloane.

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 8 04:27 EST 2016. Contains 278902 sequences.