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A042257 Denominators of continued fraction convergents to sqrt(654). 2

%I #11 Jul 17 2023 23:55:00

%S 1,1,2,5,7,68,75,143,2363,2506,4869,46327,51196,148719,199915,348634,

%T 17631615,17980249,35611864,89203977,124815841,1212546546,1337362387,

%U 2549908933,42135905315,44685814248,86821719563,826081290315,912903009878,2651887310071

%N Denominators of continued fraction convergents to sqrt(654).

%H Vincenzo Librandi, <a href="/A042257/b042257.txt">Table of n, a(n) for n = 0..200</a>

%H <a href="/index/Rec#order_32">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17831530, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

%F a(n) = 17831530*a(n-16) - a(n-32) for n>31. - _Vincenzo Librandi_, Jan 19 2014

%t Denominator[Convergents[Sqrt[654], 30]] (* _Vincenzo Librandi_, Jan 19 2014 *)

%Y Cf. A042256.

%K nonn,frac,easy

%O 0,3

%A _N. J. A. Sloane_.

%E More terms from _Vincenzo Librandi_, Jan 19 2014

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Last modified July 23 10:25 EDT 2024. Contains 374547 sequences. (Running on oeis4.)