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A041825
Denominators of continued fraction convergents to sqrt(433).
2
1, 1, 5, 21, 47, 115, 162, 601, 7975, 8576, 16551, 25127, 41678, 566941, 1742501, 2309442, 6361385, 15032212, 66490233, 280993144, 347483377, 14180328224, 14527811601, 72291574628, 303694110113, 679679794854, 1663053699821, 2342733494675, 8691254183846
OFFSET
0,3
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, 0, 14461321368, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
a(n) = 14461321368*a(n-21) + a(n-42) for n>41. - Vincenzo Librandi, Dec 25 2013
MATHEMATICA
Denominator/@Convergents[Sqrt[433], 30] (* Harvey P. Dale, Apr 04 2011 *)
CROSSREFS
Cf. A041824.
Sequence in context: A166010 A146846 A296200 * A022268 A201279 A146721
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Dec 25 2013
STATUS
approved