Knot[9, 38] -> {14768.421875, {1668 + 62/t^8 - 328/t^6 + 852/t^4 - 1420/t^2 - 
    1420*t^2 + 852*t^4 - 328*t^6 + 62*t^8, 2509142 + 1182/t^16 - 12246/t^14 + 
    62904/t^12 - 213694/t^10 + 538946/t^8 - 1069918/t^6 + 1723338/t^4 - 
    2285080/t^2 - 2285080*t^2 + 1723338*t^4 - 1069918*t^6 + 538946*t^8 - 
    213694*t^10 + 62904*t^12 - 12246*t^14 + 1182*t^16}}
