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A042231
Denominators of continued fraction convergents to sqrt(641).
2
1, 3, 19, 22, 217, 673, 890, 3343, 4233, 24508, 28741, 53249, 294986, 348235, 1339691, 1687926, 6403469, 59319147, 65722616, 453654843, 1426687145, 71788012093, 216790723424, 1372532352637, 1589323076061, 15676440037186, 48618643187619, 64295083224805
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, 72241666936, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
MATHEMATICA
Denominator[Convergents[Sqrt[641], 30]] (* Vincenzo Librandi, Jan 17 2014 *)
CROSSREFS
Cf. A042230.
Sequence in context: A359314 A022128 A041381 * A191074 A019408 A070045
KEYWORD
nonn,frac,easy
EXTENSIONS
More terms from Vincenzo Librandi, Jan 17 2014
STATUS
approved