OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,98,0,-1).
FORMULA
a(n) = 9602*a(n-4) - a(n-8) = 98*a(n-2) - a(n-4). - Vincenzo Librandi and Bruno Berselli, Nov 01 2013
G.f.: (3 + x)*(4 + 15*x - x^2)/((1 - 10*x + x^2)*(1 + 10*x + x^2)). [Bruno Berselli, Nov 01 2013]
MATHEMATICA
Numerator[Convergents[Sqrt[150], 30]] (* Vincenzo Librandi, Nov 01 2013 *)
LinearRecurrence[{0, 98, 0, -1}, {12, 49, 1188, 4801}, 20] (* Bruno Berselli, Nov 01 2013 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
STATUS
approved