

A042745


Denominators of continued fraction convergents to sqrt(903).


2



1, 20, 1201, 24040, 1443601, 28896060, 1735207201, 34733040080, 2085717612001, 41749085280100, 2507030834418001, 50182365773640120, 3013448977252825201, 60319161910830144140, 3622163163627061473601, 72503582434452059616160
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OFFSET

0,2


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,1202,0,1).


FORMULA

G.f.: (x^220*x1) / (x^41202*x^2+1).  Colin Barker, Dec 22 2013


MATHEMATICA

Denominator[Convergents[Sqrt[903], 30]] (* Vincenzo Librandi, Jan 28 2014 *)
LinearRecurrence[{0, 1202, 0, 1}, {1, 20, 1201, 24040}, 20] (* Harvey P. Dale, Oct 14 2019 *)


CROSSREFS

Cf. A042744, A040872.
Sequence in context: A151625 A203775 A184269 * A158912 A036067 A294191
Adjacent sequences: A042742 A042743 A042744 * A042746 A042747 A042748


KEYWORD

nonn,frac,easy,less


AUTHOR

N. J. A. Sloane.


EXTENSIONS

Additional term from Colin Barker, Dec 22 2013


STATUS

approved



