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A041928 Numerators of continued fraction convergents to sqrt(487). 2
22, 309, 331, 971, 4215, 5186, 9401, 33389, 76179, 414284, 490463, 3357062, 3847525, 7204587, 155143852, 162348439, 317492291, 2067302185, 2384794476, 13991274565, 30367343606, 105093305383 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 103812147681136, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

FORMULA

a(n) = 103812147681136*a(n-28) - a(n-56) for n>55. [Bruno Berselli, Nov 12 2013]

MATHEMATICA

Numerator[Convergents[Sqrt[487], 30]] (* Vincenzo Librandi, Nov 12 2013 *)

CROSSREFS

Cf. A041929.

Sequence in context: A028109 A003468 A120051 * A028054 A100789 A028038

Adjacent sequences:  A041925 A041926 A041927 * A041929 A041930 A041931

KEYWORD

nonn,cofr,frac,easy,less

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 17 23:26 EST 2019. Contains 329242 sequences. (Running on oeis4.)