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A042257 Denominators of continued fraction convergents to sqrt(654). 2
1, 1, 2, 5, 7, 68, 75, 143, 2363, 2506, 4869, 46327, 51196, 148719, 199915, 348634, 17631615, 17980249, 35611864, 89203977, 124815841, 1212546546, 1337362387, 2549908933, 42135905315, 44685814248, 86821719563, 826081290315, 912903009878, 2651887310071 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

FORMULA

a(n) = 17831530*a(n-16) - a(n-32) for n>31. - Vincenzo Librandi, Jan 19 2014

MATHEMATICA

Denominator[Convergents[Sqrt[654], 30]] (* Vincenzo Librandi, Jan 19 2014 *)

CROSSREFS

Cf. A042256.

Sequence in context: A182785 A041125 A293592 * A103056 A041445 A265815

Adjacent sequences:  A042254 A042255 A042256 * A042258 A042259 A042260

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 March 20 07:42 EDT 2019. Contains 321345 sequences. (Running on oeis4.)