OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 161602, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^15 -30*x^14 +181*x^13 -211*x^12 +603*x^11 -3829*x^10 +8261*x^9 -12090*x^8 -80801*x^7 -12090*x^6 -8261*x^5 -3829*x^4 -603*x^3 -211*x^2 -181*x -30) / ((x^4 -20*x^2 -1)*(x^4 +20*x^2 -1)*(x^8 +402*x^4 +1)). - Colin Barker, Dec 23 2013
MATHEMATICA
Numerator[Convergents[Sqrt[909], 30]] (* Vincenzo Librandi, Dec 04 2013 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 23 2013
STATUS
approved