A042737 Denominators of continued fraction convergents to sqrt(898).

1, 1, 29, 30, 1769, 1799, 52141, 53940, 3180661, 3234601, 93749489, 96984090, 5718826709, 5815810799, 168561529081, 174377339880, 10282447242121, 10456824582001, 303073535538149, 313530360120150, 18487834422506849, 18801364782626999

Offset

0,3

Links

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

Index entries for linear recurrences with constant coefficients, signature (0,0,0,1798,0,0,0,-1).

Formula

G.f.: -(x^2-x-1)*(x^4+30*x^2+1) / (x^8-1798*x^4+1). - Colin Barker, Dec 22 2013

Mathematica

Denominator[Convergents[Sqrt[898], 30]] (* Vincenzo Librandi, Jan 28 2014 *)

Crossrefs

Cf. A042736, A040868.

Sequence in context: A042734 A041419 A042736 * A042738 A157498 A031062

Adjacent sequences: A042734 A042735 A042736 * A042738 A042739 A042740

Keyword

nonn,frac,easy

Author

N. J. A. Sloane.

Extensions

More terms from Colin Barker, Dec 22 2013

Status

approved