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A042573
Denominators of continued fraction convergents to sqrt(815).
2
1, 1, 2, 9, 11, 31, 166, 363, 529, 2479, 3008, 5487, 310280, 315767, 626047, 2819955, 3446002, 9711959, 52005797, 113723553, 165729350, 776640953, 942370303, 1719011256, 97207000639, 98926011895, 196133012534, 883458062031, 1079591074565, 3042640211161
OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 313288, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^22 -x^21 +2*x^20 -9*x^19 +11*x^18 -31*x^17 +166*x^16 -363*x^15 +529*x^14 -2479*x^13 +3008*x^12 -5487*x^11 -3008*x^10 -2479*x^9 -529*x^8 -363*x^7 -166*x^6 -31*x^5 -11*x^4 -9*x^3 -2*x^2 -x -1) / (x^24 -313288*x^12 +1). - Colin Barker, Dec 18 2013
MATHEMATICA
Denominator[Convergents[Sqrt[815], 30]] (* Vincenzo Librandi, Jan 25 2014 *)
CROSSREFS
Sequence in context: A280418 A042053 A134775 * A041651 A042687 A083159
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 18 2013
STATUS
approved