OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,94,0,-1).
FORMULA
G.f.: (1 + x)*(23 + 24*x - x^2)/(1 - 94*x^2 + x^4). - Vincenzo Librandi, Nov 13 2013
a(n) = 94*a(n-2) - a(n-4). - Vincenzo Librandi, Nov 14 2013
MATHEMATICA
Numerator[Convergents[Sqrt[552], 30]] (* or *) CoefficientList[Series[(1 + x) (23 + 24 x - x^2)/(1 - 94 x^2 + x^4), {x, 0, 30}], x] (* Vincenzo Librandi, Nov 14 2013 *)
LinearRecurrence[{0, 94, 0, -1}, {23, 47, 2185, 4417}, 20] (* Harvey P. Dale, Mar 13 2017 *)
PROG
(Magma) I:=[23, 47, 2185, 4417]; [n le 4 select I[n] else 94*Self(n-2)-Self(n-4): n in [1..25]]; // Vincenzo Librandi, Nov 14 2013
CROSSREFS
KEYWORD
nonn,cofr,frac,easy,less
AUTHOR
STATUS
approved