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A042563 Denominators of continued fraction convergents to sqrt(810). 2
1, 2, 11, 13, 63, 76, 443, 962, 54315, 109592, 602275, 711867, 3449743, 4161610, 24257793, 52677196, 2974180769, 6001038734, 32979374439, 38980413173, 188901027131, 227881440304, 1328308228651, 2884497897606, 162860190494587, 328604878886780 (list; graph; refs; listen; history; text; internal format)
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, 0, 0, 0, 0, 0, 0, 54758, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^14 -2*x^13 +11*x^12 -13*x^11 +63*x^10 -76*x^9 +443*x^8 -962*x^7 -443*x^6 -76*x^5 -63*x^4 -13*x^3 -11*x^2 -2*x -1) / ((x^8 -234*x^4 -1)*(x^8 +234*x^4 -1)). - Colin Barker, Dec 18 2013

MATHEMATICA

Denominator[Convergents[Sqrt[810], 30]] (* Harvey P. Dale, Dec 25 2012 *)

CROSSREFS

Cf. A042562, A040781.

Sequence in context: A291464 A262832 A091021 * A041163 A073914 A266991

Adjacent sequences:  A042560 A042561 A042562 * A042564 A042565 A042566

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Dec 18 2013

STATUS

approved

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Last modified January 17 15:12 EST 2020. Contains 330958 sequences. (Running on oeis4.)