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A042781 Denominators of continued fraction convergents to sqrt(921). 2
1, 2, 3, 20, 23, 273, 842, 1115, 3072, 7259, 24849, 32108, 56957, 89065, 146022, 235087, 2026718, 40769447, 328182294, 368951741, 697134035, 1066085776, 1763219811, 2829305587, 10251136572, 23331578731, 56914294034, 80245872765, 297651912329, 3354416908384 (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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5044115425671470, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 5044115425671470*a(n-34) - a(n-68) for n>67. - Vincenzo Librandi, Jan 29 2014
MATHEMATICA
Denominator[Convergents[Sqrt[921], 30]] (* Vincenzo Librandi, Jan 29 2014 *)
CROSSREFS
Sequence in context: A042265 A041093 A154746 * A308885 A136886 A191423
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 29 2014
STATUS
approved

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Last modified March 28 22:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)