OFFSET
0,3
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, 0, 0, 7450, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^14 -x^13 +2*x^12 -7*x^11 +16*x^10 -55*x^9 +71*x^8 -126*x^7 -71*x^6 -55*x^5 -16*x^4 -7*x^3 -2*x^2 -x -1) / (x^16 -7450*x^8 +1). - Colin Barker, Dec 21 2013
a(n) = 7450*a(n-8) - a(n-16) for n>15. - Vincenzo Librandi, Dec 21 2013
MATHEMATICA
Denominator[Convergents[Sqrt[874], 30]] (* Vincenzo Librandi Dec 21 2013 *)
PROG
(Magma) I:=[1, 1, 2, 7, 16, 55, 71, 126, 7379, 7505, 14884, 52157, 119198, 409751, 528949, 938700]; [n le 16 select I[n] else 7450*Self(n-8)-Self(n-16): n in [1..70]]; // Vincenzo Librandi, Dec 21 2013
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 21 2013
STATUS
approved