Knot[9, 4] -> {10036.671875, {180 + 23/t^8 - 74/t^6 + 125/t^4 - 164/t^2 - 
    164*t^2 + 125*t^4 - 74*t^6 + 23*t^8, 41007 + 168/t^16 - 1064/t^14 + 
    3397/t^12 - 7494/t^10 + 13245/t^8 - 20655/t^6 + 29463/t^4 - 37560/t^2 - 
    37560*t^2 + 29463*t^4 - 20655*t^6 + 13245*t^8 - 7494*t^10 + 3397*t^12 - 
    1064*t^14 + 168*t^16}}
