OFFSET
0,2
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, 3922, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^10-2*x^9+3*x^8-26*x^7+29*x^6-84*x^5-29*x^4-26*x^3-3*x^2-2*x-1) / (x^12-3922*x^6+1). - Colin Barker, Nov 30 2013
a(n) = 3922*a(n-6) - a(n-12) for n>11. - Vincenzo Librandi, Jan 13 2014
MATHEMATICA
Denominator[Convergents[Sqrt[545], 38]] (* Vincenzo Librandi, Jan 13 2014 *)
PROG
(Magma) I:=[1, 2, 3, 26, 29, 84, 3893, 7870, 11763, 101974, 113737, 329448]; [n le 12 select I[n] else 3922*Self(n-6)-Self(n-12): n in [1..30]]; // Vincenzo Librandi, Jan 13 2014
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Nov 30 2013
STATUS
approved