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A042667
Denominators of continued fraction convergents to sqrt(863).
2
1, 2, 3, 5, 8, 61, 69, 268, 873, 4633, 135230, 680783, 2177579, 7213520, 9391099, 72951213, 82342312, 155293525, 237635837, 630565199, 36810417379, 74251399957, 111061817336, 185313217293, 296375034629, 2259938459696, 2556313494325, 9928878942671
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, 37048053216, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 37048053216*a(n-20) - a(n-40) for n>39. - Vincenzo Librandi, Jan 26 2014
MATHEMATICA
Denominator[Convergents[Sqrt[863], 30]] (* Vincenzo Librandi, Jan 26 2014 *)
CROSSREFS
Sequence in context: A045504 A068500 A272623 * A279073 A279074 A120495
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 26 2014
STATUS
approved