OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,398,0,0,0,-1).
FORMULA
G.f.: -(x^7-13*x^6+40*x^5-53*x^4-199*x^3-53*x^2-40*x-13) / ((x^4-20*x^2+1)*(x^4+20*x^2+1)). - Colin Barker, Nov 06 2013
a(n) = 398*a(n-4) - a(n-8) for n > 7. - Wesley Ivan Hurt, Oct 15 2017
MATHEMATICA
Numerator[Convergents[Sqrt[176], 30]] (* Vincenzo Librandi, Nov 01 2013 *)
LinearRecurrence[{0, 0, 0, 398, 0, 0, 0, -1}, {13, 40, 53, 199, 5227, 15880, 21107, 79201}, 30]
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Nov 06 2013
STATUS
approved