OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,142,0,0,0,-1).
FORMULA
G.f.: (23 +24*x +47*x^2 +71*x^3 +47*x^4 -24*x^5 +23*x^6 -x^7)/((1 -12x^2 +x^4)*(1 +12*x^2 +x^4)). [Bruno Berselli, Nov 15 2013]
MATHEMATICA
Numerator[Convergents[Sqrt[560], 30]] (* Vincenzo Librandi, Nov 15 2013 *)
CoefficientList[Series[(23 + 24 x + 47 x^2 + 71 x^3 + 47 x^4 - 24 x^5 + 23 x^6 - x^7)/(1 - 142 x^4 + x^8), {x, 0, 30}], x] (* Bruno Berselli, Nov 15 2013 *)
LinearRecurrence[{0, 0, 0, 142, 0, 0, 0, -1}, {23, 24, 47, 71, 3313, 3384, 6697, 10081}, 30] (* Harvey P. Dale, Aug 11 2019 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy,less
AUTHOR
STATUS
approved