|
|
A042279
|
|
Denominators of continued fraction convergents to sqrt(665).
|
|
2
|
|
|
1, 1, 4, 5, 14, 33, 80, 113, 419, 532, 27019, 27551, 109672, 137223, 384118, 905459, 2195036, 3100495, 11496521, 14597016, 741347321, 755944337, 3009180332, 3765124669, 10539429670, 24843984009, 60227397688, 85071381697, 315441542779, 400512924476
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 27438, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
|
|
FORMULA
|
G.f.: -(x^18 -x^17 +4*x^16 -5*x^15 +14*x^14 -33*x^13 +80*x^12 -113*x^11 +419*x^10 -532*x^9 -419*x^8 -113*x^7 -80*x^6 -33*x^5 -14*x^4 -5*x^3 -4*x^2 -x -1) / (x^20 -27438*x^10 +1). - Colin Barker, Dec 06 2013
|
|
MAPLE
|
convert(sqrt(665), confrac, 30, cvgts): denom(cvgts); # Wesley Ivan Hurt, Dec 07 2013
|
|
MATHEMATICA
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,frac,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|