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 A042289 Denominators of continued fraction convergents to sqrt(670). 2
 1, 1, 8, 9, 17, 26, 147, 1496, 7627, 9123, 16750, 25873, 197861, 223734, 11384561, 11608295, 92642626, 104250921, 196893547, 301144468, 1702615887, 17327303338, 88339132577, 105666435915, 194005568492, 299672004407, 2291709599341, 2591381603748 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 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, 11582422, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1). FORMULA a(n) = 11582422*a(n-14) - a(n-28) for n>27. - Vincenzo Librandi, Jan 19 2014 MATHEMATICA Denominator[Convergents[Sqrt[670], 30]] (* Vincenzo Librandi, Jan 19 2014 *) CROSSREFS Cf. A042288. Sequence in context: A129659 A041130 A041307 * A041132 A020693 A042753 Adjacent sequences: A042286 A042287 A042288 * A042290 A042291 A042292 KEYWORD nonn,frac,easy AUTHOR N. J. A. Sloane. EXTENSIONS More terms from Vincenzo Librandi, Jan 19 2014 STATUS approved

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Last modified July 17 18:25 EDT 2024. Contains 374377 sequences. (Running on oeis4.)