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A042817 Denominators of continued fraction convergents to sqrt(939). 2
1, 1, 2, 3, 14, 283, 1146, 1429, 2575, 4004, 242815, 246819, 489634, 736453, 3435446, 69445373, 281216938, 350662311, 631879249, 982541560, 59584372849, 60566914409, 120151287258, 180718201667, 843024093926, 17041200080187 (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, 245390, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^18 -x^17 +2*x^16 -3*x^15 +14*x^14 -283*x^13 +1146*x^12 -1429*x^11 +2575*x^10 -4004*x^9 -2575*x^8 -1429*x^7 -1146*x^6 -283*x^5 -14*x^4 -3*x^3 -2*x^2 -x -1) / (x^20 -245390*x^10 +1). - Colin Barker, Dec 24 2013

MATHEMATICA

Denominator[Convergents[Sqrt[939], 30]] (* Vincenzo Librandi, Jan 30 2014 *)

CROSSREFS

Cf. A042816, A040908.

Sequence in context: A041521 A101003 A042071 * A224848 A271330 A262462

Adjacent sequences:  A042814 A042815 A042816 * A042818 A042819 A042820

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 24 2013

STATUS

approved

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Last modified February 16 09:23 EST 2019. Contains 320161 sequences. (Running on oeis4.)