A041158 Numerators of continued fraction convergents to sqrt(89).
9, 19, 66, 217, 500, 9217, 18934, 66019, 216991, 500001, 9217009, 18934019, 66019066, 216991217, 500001500, 9217018217, 18934037934, 66019132019, 216991433991, 500002000001, 9217027434009, 18934056868019, 66019198038066, 216991650982217, 500002500002500
Offset: 0
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..200
- Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,1000,0,0,0,0,1).
Programs
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Mathematica
Numerator[Convergents[Sqrt[89],30]] (* Harvey P. Dale, Jul 29 2012 *)
Formula
G.f.: -(x^9-9*x^8+19*x^7-66*x^6+217*x^5+500*x^4+217*x^3+66*x^2+19*x+9) / (x^10+1000*x^5-1). - Colin Barker, Nov 05 2013
Extensions
More terms from Colin Barker, Nov 05 2013