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A041797
Denominators of continued fraction convergents to sqrt(419).
2
1, 2, 15, 17, 49, 164, 213, 590, 803, 15847, 16650, 49147, 65797, 246538, 558873, 805411, 6196750, 13198911, 534153190, 1081505291, 8104690227, 9186195518, 26477081263, 88617439307, 115094520570, 318806480447, 433901001017, 8562925499770, 8996826500787
OFFSET
0,2
LINKS
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, 540349940, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 540349940*a(n-18) - a(n-36) for n>35. - Vincenzo Librandi, Dec 24 2013
MATHEMATICA
Denominator[Convergents[Sqrt[419], 30]] (* Vincenzo Librandi, Dec 24 2013 *)
CROSSREFS
Cf. A041796.
Sequence in context: A276114 A022117 A042571 * A041289 A249944 A042685
KEYWORD
nonn,cofr,frac,easy
EXTENSIONS
More terms from Vincenzo Librandi, Dec 24 2013
STATUS
approved