OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 446, 0, 0, 0, -1).
FORMULA
a(n) = 446*a(n-4)-a(n-8). G.f.: -(x^2-x-1)*(x^4+8*x^2+1)/(x^8-446*x^4+1). [Colin Barker, Jul 16 2012]
MATHEMATICA
Denominator[Convergents[Sqrt[777], 30]] (* Vincenzo Librandi, Oct 25 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved