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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
OFFSET
0,3
LINKS
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
Sequence in context: A042331 A082975 A275432 * A081519 A041121 A002354
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Nov 28 2013
STATUS
approved