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A042235 Denominators of continued fraction convergents to sqrt(643). 2

%I #18 Mar 19 2017 10:18:50

%S 1,2,3,11,14,235,1894,4023,5917,9940,55617,1400365,7057442,8457807,

%T 15515249,39488305,331421689,5342235329,5673657018,22363206383,

%U 28036863401,78436933185,3949883522651,7978203978487,11928087501138,43762466481901

%N Denominators of continued fraction convergents to sqrt(643).

%H Vincenzo Librandi, <a href="/A042235/b042235.txt">Table of n, a(n) for n = 0..200</a>

%H <a href="/index/Rec#order_44">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, 0, 0, 0, 0, 0, 0, 3977920386052, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).

%t Denominator[Convergents[Sqrt[643], 30]] (* _Harvey P. Dale_, Aug 05 2011 *)

%Y Cf. A042234.

%K nonn,frac,easy

%O 0,2

%A _N. J. A. Sloane_.

%E More terms from _Vincenzo Librandi_, Jan 17 2014

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Last modified March 29 09:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)