login
A042523
Denominators of continued fraction convergents to sqrt(790).
2
1, 9, 19, 28, 159, 187, 346, 1225, 5246, 6471, 31130, 37601, 181534, 582203, 763737, 1345940, 7493437, 8839377, 25172191, 235389096, 13206961567, 119098043199, 251403047965, 370501091164, 2103908503785, 2474409594949, 4578318098734, 16209363891151
OFFSET
0,2
LINKS
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, 13232133758, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
a(n) = 13232133758*a(n-20) - a(n-40) for n>39. - Vincenzo Librandi, Jan 23 2014
MATHEMATICA
Denominator[Convergents[Sqrt[790], 30]] (* Vincenzo Librandi, Jan 23 2014 *)
CROSSREFS
Sequence in context: A098791 A041156 A041369 * A347421 A037085 A088478
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 23 2014
STATUS
approved