The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  0  X  2  1  1  1  1  X  0  X  2  1  X  X  1  1  1  1  X  1  1  1  X  X 2X  X 2X+2  X 2X  X 2X+2  X  X  X  X 2X+2  0  0 2X+2 2X+2 2X 2X 2X+2  1
 0  X  2 3X+2  0 3X+2  2 3X 2X X+2 2X+2 3X 2X X+2 2X+2  X  0 3X+2  2 3X 3X+2  X 3X  X  0 3X+2  2 3X 3X+2  X 3X  X 2X  0  2 X+2 2X X+2 2X+2 2X 2X+2  X  X 2X+2 X+2  X  X  X X+2  X  X  X  0  2 2X 2X+2  2 2X+2 2X+2  2 2X+2 2X+2 2X+2 2X+2  0
 0  0 2X 2X 2X  0  0 2X 2X 2X  0  0  0  0 2X 2X  0  0 2X 2X  0 2X 2X  0 2X 2X  0  0 2X  0  0 2X 2X 2X 2X 2X  0  0 2X 2X  0 2X  0 2X 2X 2X  0  0  0  0 2X 2X  0  0  0  0 2X  0 2X  0 2X  0 2X  0  0

generates a code of length 65 over Z4[X]/(X^2+2X+2) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+13x^64+220x^65+14x^66+2x^72+4x^73+2x^74

The gray image is a code over GF(2) with n=520, k=8 and d=256.
This code was found by Heurico 1.16 in 0.234 seconds.