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 X^2+2  1  1  1  1  X  0  X X^2+2  1  X  X  1  1  1  1  X  1  1  1  X  X  2  X X^2  X  2  X X^2  X  X  X  X X^2  0  0 X^2 X^2  2  2 X^2  1
 0  X X^2+2 X^2+X  0 X^2+X X^2+2 X+2  2 X^2+X+2 X^2 X+2  2 X^2+X+2 X^2  X  0 X^2+X X^2+2 X+2 X^2+X  X X+2  X  0 X^2+X X^2+2 X+2 X^2+X  X X+2  X  2  0 X^2+2 X^2+X+2  2 X^2+X+2 X^2  2 X^2  X  X X^2 X^2+X+2  X  X  X X^2+X+2  X  X  X  0 X^2+2  2 X^2 X^2+2 X^2 X^2 X^2+2 X^2 X^2 X^2 X^2  0
 0  0  2  2  2  0  0  2  2  2  0  0  0  0  2  2  0  0  2  2  0  2  2  0  2  2  0  0  2  0  0  2  2  2  2  2  0  0  2  2  0  2  0  2  2  2  0  0  0  0  2  2  0  0  0  0  2  0  2  0  2  0  2  0  0

generates a code of length 65 over Z4[X]/(X^3+2,2X) 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 0.235 seconds.