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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
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
EXTENSIONS
More terms from Vincenzo Librandi, Jan 31 2014
STATUS
approved