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 A042220 Numerators of continued fraction convergents to sqrt(636). 2
 25, 101, 126, 227, 807, 2648, 32583, 100397, 333774, 434171, 767945, 3505951, 176065495, 707767931, 883833426, 1591601357, 5658637497, 18567513848, 228468803673, 703973924867, 2340390578274, 3044364503141 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Conjecture: satisfies a linear recurrence having signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7011902, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1). - Harvey P. Dale, May 08 2022 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, 7011902, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1). MATHEMATICA Numerator[Convergents[Sqrt[636], 30]] (* Harvey P. Dale, Sep 17 2013 *) CROSSREFS Cf. A042221. Sequence in context: A309779 A356533 A221274 * A114254 A042222 A158551 Adjacent sequences: A042217 A042218 A042219 * A042221 A042222 A042223 KEYWORD nonn,cofr,frac,easy AUTHOR N. J. A. Sloane. STATUS approved

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Last modified May 25 07:15 EDT 2024. Contains 372782 sequences. (Running on oeis4.)