OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,236674,0,0,0,0,0,0,0,0,0,-1).
FORMULA
G.f.: -(x^19 - 31*x^18 + 94*x^17 - 125*x^16 + 219*x^15 - 344*x^14 + 10539*x^13 - 10883*x^12 + 21422*x^11 - 32305*x^10 - 118337*x^9 - 32305*x^8 - 21422*x^7 - 10883*x^6 - 10539*x^5 - 344*x^4 - 219*x^3 - 125*x^2 - 94*x - 31) / (x^20 - 236674*x^10 + 1). - Colin Barker, Dec 25 2013
a(n) = 236674*a(n-10) - a(n-20). - Wesley Ivan Hurt, May 03 2023
MATHEMATICA
Numerator[Convergents[Sqrt[978], 30]] (* Vincenzo Librandi, Dec 08 2013 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 25 2013
STATUS
approved