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A042581
Denominators of continued fraction convergents to sqrt(819).
2
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 3114, 3169, 6283, 9452, 15735, 25187, 40922, 66109, 107031, 173140, 9802871, 9976011, 19778882, 29754893, 49533775, 79288668, 128822443, 208111111, 336933554, 545044665, 30859434794, 31404479459, 62263914253, 93668393712
OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 3148, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^2-x-1)*(x^4-3*x^3+4*x^2-2*x+1)*(x^4-2*x^3+4*x^2-3*x+1)*(x^4+2*x^3+4*x^2+3*x+1)*(x^4+3*x^3+4*x^2+2*x+1) / (x^20-3148*x^10+1). - Colin Barker, Dec 18 2013
MATHEMATICA
Denominator[Convergents[Sqrt[819], 30]] (* Vincenzo Librandi, Jan 25 2014 *)
CROSSREFS
Sequence in context: A005181 A177376 A120659 * A349843 A302019 A207976
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 18 2013
STATUS
approved