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

generates a code of length 65 over Z4[X]/(X^2+2) who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+160x^60+48x^62+128x^63+599x^64+256x^65+464x^66+128x^67+198x^68+55x^72+10x^76+1x^120

The gray image is a code over GF(2) with n=520, k=11 and d=240.
This code was found by Heurico 1.16 in 4.83 seconds.