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A042313
Denominators of continued fraction convergents to sqrt(683).
2
1, 7, 15, 67, 216, 283, 499, 12758, 13257, 26015, 91302, 391223, 873748, 6507459, 339261616, 2381338771, 5101939158, 22789095403, 73469225367, 96258320770, 169727546137, 4339446974195, 4509174520332, 8848621494527, 31055039003913, 133068777510179
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, 340135364, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 340135364*a(n-14) - a(n-28) for n>27. - Vincenzo Librandi, Jan 20 2014
MATHEMATICA
Denominator[Convergents[Sqrt[683], 30]] (* Vincenzo Librandi, Jan 20 2014 *)
CROSSREFS
Cf. A042312.
Sequence in context: A039789 A279882 A171064 * A058206 A219523 A177128
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 20 2014
STATUS
approved