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A041985 Denominators of continued fraction convergents to sqrt(515). 2
1, 1, 3, 10, 13, 49, 62, 235, 532, 767, 34280, 35047, 104374, 348169, 452543, 1705798, 2158341, 8180821, 18519983, 26700804, 1193355359, 1220056163, 3633467685, 12120459218, 15753926903, 59382239927, 75136166830, 284790740417, 644717647664, 929508388081 (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, 34812, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

G.f.: -(x^18 -x^17 +3*x^16 -10*x^15 +13*x^14 -49*x^13 +62*x^12 -235*x^11 +532*x^10 -767*x^9 -532*x^8 -235*x^7 -62*x^6 -49*x^5 -13*x^4 -10*x^3 -3*x^2 -x -1) / (x^20 -34812*x^10 +1). - Colin Barker, Nov 28 2013

MATHEMATICA

Denominator[Convergents[Sqrt[515], 30]] (* Vincenzo Librandi, Jan 11 2014 *)

CROSSREFS

Cf. A041984, A040492.

Sequence in context: A042331 A082975 A275432 * A081519 A041121 A002354

Adjacent sequences:  A041982 A041983 A041984 * A041986 A041987 A041988

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Nov 28 2013

STATUS

approved

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Last modified August 1 22:36 EDT 2021. Contains 346408 sequences. (Running on oeis4.)