{{0, 0, 0, 
   0}, {(18432*x)/(3 + 16*x^2), (-128*x)/(3 + 16*x^2), (512*x)/(3 - 
      32*x^2 - 256*x^4),
   0}, {0, (16*x)/(-1 + 16*x^2), (96*x)/(1 - 16*x^2), 
   0}, {1152/(-1 + 16*x^2), 12/(1 - 16*x^2),
   24/(-1 + 16*x^2), -((2 - 96*x^2)/(x - 16*x^3))}}