OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,140452,0,0,0,0,0,0,0,0,0,-1).
FORMULA
G.f.: -(x^19 -15*x^18 +16*x^17 -31*x^16 +78*x^15 -265*x^14 +4053*x^13 -12424*x^12 +28901*x^11 -41325*x^10 -70226*x^9 -41325*x^8 -28901*x^7 -12424*x^6 -4053*x^5 -265*x^4 -78*x^3 -31*x^2 -16*x -15) / (x^20 -140452*x^10 +1). - Colin Barker, Nov 10 2013
MATHEMATICA
Numerator[Convergents[Sqrt[243], 30]] (* Vincenzo Librandi, Nov 02 2013 *)
LinearRecurrence[{0, 0, 0, 0, 0, 0, 0, 0, 0, 140452, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1}, {15, 16, 31, 78, 265, 4053, 12424, 28901, 41325, 70226, 2148105, 2218331, 4366436, 10951203, 37220045, 569251878, 1744975679, 4059203236, 5804178915, 9863382151}, 40] (* Harvey P. Dale, Aug 10 2021 *)
CROSSREFS
KEYWORD
nonn,cofr,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Nov 10 2013
STATUS
approved