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, 245390, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1).
FORMULA
G.f.: -(x^19 -30*x^18 +31*x^17 -61*x^16 +92*x^15 -429*x^14 +8672*x^13 -35117*x^12 +43789*x^11 -78906*x^10 -122695*x^9 -78906*x^8 -43789*x^7 -35117*x^6 -8672*x^5 -429*x^4 -92*x^3 -61*x^2 -31*x -30) / (x^20 -245390*x^10 +1). - Colin Barker, Dec 24 2013
MATHEMATICA
Numerator[Convergents[Sqrt[939], 30]] (* Vincenzo Librandi, Dec 05 2013 *)
LinearRecurrence[{0, 0, 0, 0, 0, 0, 0, 0, 0, 245390, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1}, {30, 31, 61, 92, 429, 8672, 35117, 43789, 78906, 122695, 7440606, 7563301, 15003907, 22567208, 105272739, 2128021988, 8617360691, 10745382679, 19362743370, 30108126049}, 30] (* Harvey P. Dale, Oct 08 2023 *)
CROSSREFS
KEYWORD
nonn,frac,easy
AUTHOR
EXTENSIONS
More terms from Colin Barker, Dec 24 2013
STATUS
approved