The generator matrix

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

generates a code of length 68 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+108x^64+300x^65+416x^66+304x^67+100x^68+172x^69+292x^70+160x^71+38x^72+52x^73+24x^74+16x^75+24x^76+20x^77+20x^78+1x^128

The gray image is a code over GF(2) with n=544, k=11 and d=256.
This code was found by Heurico 1.16 in 0.594 seconds.