OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,214,0,0,1).
FORMULA
G.f.: (21 + 43*x + 107*x^2 + 43*x^3 - 21*x^4 + x^5)/(1 - 214*x^3 - x^6). [Bruno Berselli, Nov 11 2013]
a(n) = 214*a(n-3) + a(n-6) for n>5. [Bruno Berselli, Nov 11 2013]
MATHEMATICA
Numerator[Convergents[Sqrt[458], 20]] (* Harvey P. Dale, Aug 26 2013 *)
LinearRecurrence[{0, 0, 214, 0, 0, 1}, {21, 43, 107, 4537, 9181, 22899}, 30] (* Bruno Berselli, Nov 11 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy,less
AUTHOR
STATUS
approved