This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A042224 Numerators of continued fraction convergents to sqrt(638). 2
 25, 76, 101, 682, 1465, 9472, 10937, 42283, 2125087, 6417544, 8542631, 57673330, 123889291, 801009076, 924898367, 3575704177, 179710107217, 542706025828, 722416133045, 4877202824098, 10476821781241, 67738133511544, 78214955292785, 302382999389899 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 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, 84566, 0, 0, 0, 0, 0, 0, 0, -1). FORMULA G.f.: -(x^15 -25*x^14 +76*x^13 -101*x^12 +682*x^11 -1465*x^10 +9472*x^9 -10937*x^8 -42283*x^7 -10937*x^6 -9472*x^5 -1465*x^4 -682*x^3 -101*x^2 -76*x -25) / (x^16 -84566*x^8 +1). - Colin Barker, Dec 04 2013 MATHEMATICA Numerator[Convergents[Sqrt[638], 30]] (* Vincenzo Librandi, Nov 19 2013 *) CROSSREFS Cf. A042225, A040612. Sequence in context: A118610 A008852 A042226 * A042228 A042230 A189642 Adjacent sequences:  A042221 A042222 A042223 * A042225 A042226 A042227 KEYWORD nonn,frac,easy AUTHOR EXTENSIONS More terms from Colin Barker, Dec 04 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.

Last modified December 6 19:22 EST 2019. Contains 329809 sequences. (Running on oeis4.)