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A042517 Denominators of continued fraction convergents to sqrt(787). 2
1, 18, 19, 56, 299, 355, 3139, 3494, 6633, 182585, 189218, 371803, 3163642, 3535445, 20840867, 45217179, 66058046, 1234262007, 69184730438, 1246559409891, 1315744140329, 3878047690549, 20705982593074, 24584030283623, 217378224862058 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

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, 69250788484, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 69250788484*a(n-18) - a(n-36) for n>35. - Vincenzo Librandi, Jan 23 2014

MATHEMATICA

Denominator[Convergents[Sqrt[787], 30]] (* Harvey P. Dale, Aug 22 2013 *)

CROSSREFS

Cf. A040758, A042516.

Sequence in context: A041664 A041662 A300092 * A041660 A257314 A041668

Adjacent sequences:  A042514 A042515 A042516 * A042518 A042519 A042520

KEYWORD

nonn,frac,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 23 2014

STATUS

approved

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Last modified October 16 23:30 EDT 2019. Contains 328103 sequences. (Running on oeis4.)