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A042881 Denominators of continued fraction convergents to sqrt(972). 2
1, 5, 6, 11, 17, 130, 797, 927, 3578, 4505, 66648, 71153, 280107, 351260, 2387667, 17064929, 19452596, 36517525, 55970121, 316368130, 19670794181, 98670339035, 118341133216, 217011472251, 335352605467, 2564479710520, 15722230868587, 18286710579107 (list; graph; refs; listen; history; text; internal format)
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, 0, 0, 19726764302, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 19726764302*a(n-20) - a(n-40) for n > 39. - Vincenzo Librandi, Jan 31 2014
MATHEMATICA
Denominator[Convergents[Sqrt[972], 30]] (* Vincenzo Librandi, Jan 31 2014 *)
CROSSREFS
Sequence in context: A042839 A041373 A041533 * A041052 A236387 A344555
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 31 2014
STATUS
approved

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Last modified July 17 12:34 EDT 2024. Contains 374377 sequences. (Running on oeis4.)