A042751 Denominators of continued fraction convergents to sqrt(906).

1, 10, 601, 6020, 361801, 3624030, 217803601, 2181660040, 131117406001, 1313355720050, 78932460609001, 790637961810060, 47517210169212601, 475962739653936070, 28605281589405376801, 286528778633707704080, 17220331999611867621601

Offset

0,2

Links

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

Index entries for linear recurrences with constant coefficients, signature (0,602,0,-1).

Formula

G.f.: -(x^2-10*x-1) / (x^4-602*x^2+1). - Colin Barker, Dec 22 2013

Mathematica

Denominator[Convergents[Sqrt[906], 30]] (* Vincenzo Librandi, Jan 28 2014 *)

Crossrefs

Cf. A042750, A040875.

Sequence in context: A185277 A364515 A006441 * A285372 A308145 A159622

Adjacent sequences: A042748 A042749 A042750 * A042752 A042753 A042754

Keyword

nonn,frac,easy

Author

N. J. A. Sloane.

Extensions

More terms from Colin Barker, Dec 22 2013

Status

approved