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A042667 Denominators of continued fraction convergents to sqrt(863). 2
1, 2, 3, 5, 8, 61, 69, 268, 873, 4633, 135230, 680783, 2177579, 7213520, 9391099, 72951213, 82342312, 155293525, 237635837, 630565199, 36810417379, 74251399957, 111061817336, 185313217293, 296375034629, 2259938459696, 2556313494325, 9928878942671 (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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37048053216, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 37048053216*a(n-20) - a(n-40) for n>39. - Vincenzo Librandi, Jan 26 2014

MATHEMATICA

Denominator[Convergents[Sqrt[863], 30]] (* Vincenzo Librandi, Jan 26 2014 *)

CROSSREFS

Cf. A040833, A042666.

Sequence in context: A045504 A068500 A272623 * A279073 A279074 A120495

Adjacent sequences:  A042664 A042665 A042666 * A042668 A042669 A042670

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 26 2014

STATUS

approved

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Last modified May 15 23:24 EDT 2021. Contains 343937 sequences. (Running on oeis4.)