OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,702,0,0,0,0,0,-1).
FORMULA
a(n) = 702*a(n-6)-a(n-12). G.f.: -(x^11-8*x^10+9*x^9-35*x^8+79*x^7-272*x^6-351*x^5-272*x^4-79*x^3-35*x^2-9*x-8)/((x^4-9*x^2+1)*(x^8+9*x^6+80*x^4+9*x^2+1)). [Colin Barker, Jul 18 2012]
MATHEMATICA
Numerator[Convergents[Sqrt[77], 30]] (* Vincenzo Librandi, Oct 26 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved