login
A041740
Numerators of continued fraction convergents to sqrt(390).
2
19, 20, 59, 79, 3061, 3140, 9341, 12481, 483619, 496100, 1475819, 1971919, 76408741, 78380660, 233170061, 311550721, 12072097459, 12383648180, 36839393819, 49223041999, 1907314989781, 1956538031780, 5820391053341, 7776929085121, 301343696287939
OFFSET
0,1
FORMULA
G.f.: -(x^7-19*x^6+20*x^5-59*x^4-79*x^3-59*x^2-20*x-19) / (x^8-158*x^4+1). - Colin Barker, Nov 11 2013
MATHEMATICA
Numerator[Convergents[Sqrt[390], 30]] (* Vincenzo Librandi, Nov 07 2013 *)
LinearRecurrence[{0, 0, 0, 158, 0, 0, 0, -1}, {19, 20, 59, 79, 3061, 3140, 9341, 12481}, 30] (* Harvey P. Dale, May 01 2021 *)
CROSSREFS
Cf. A041741.
Sequence in context: A041724 A041722 A041738 * A041736 A041734 A041744
KEYWORD
nonn,cofr,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Nov 11 2013
STATUS
approved