Knot[9, 13] -> {12863.65625, {644 + 40/t^8 - 172/t^6 + 378/t^4 - 568/t^2 - 
    568*t^2 + 378*t^4 - 172*t^6 + 40*t^8, 418539 + 496/t^16 - 4192/t^14 + 
    17765/t^12 - 50726/t^10 + 110764/t^8 - 198080/t^6 + 299319/t^4 - 
    384612/t^2 - 384612*t^2 + 299319*t^4 - 198080*t^6 + 110764*t^8 - 
    50726*t^10 + 17765*t^12 - 4192*t^14 + 496*t^16}}
