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A042615 Denominators of continued fraction convergents to sqrt(836). 2
1, 1, 11, 12, 23, 58, 81, 139, 1471, 1610, 91631, 93241, 1024041, 1117282, 2141323, 5399928, 7541251, 12941179, 136953041, 149894220, 8531029361, 8680923581, 95340265171, 104021188752, 199361453923, 502744096598, 702105550521, 1204849647119, 12750602021711 (list; graph; refs; listen; history; text; internal format)
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, 0, 0, 0, 0, 0, 0, 93102, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^18 -x^17 +11*x^16 -12*x^15 +23*x^14 -58*x^13 +81*x^12 -139*x^11 +1471*x^10 -1610*x^9 -1471*x^8 -139*x^7 -81*x^6 -58*x^5 -23*x^4 -12*x^3 -11*x^2 -x -1) / (x^20 -93102*x^10 +1). - Colin Barker, Dec 20 2013

MATHEMATICA

Denominator[Convergents[Sqrt[836], 30]] (* Vincenzo Librandi, Jan 25 2014 *)

CROSSREFS

Cf. A042614, A040807.

Sequence in context: A092778 A041248 A112063 * A041244 A041242 A042019

Adjacent sequences:  A042612 A042613 A042614 * A042616 A042617 A042618

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 20 2013

STATUS

approved

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Last modified December 9 19:51 EST 2019. Contains 329879 sequences. (Running on oeis4.)