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

generates a code of length 62 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+121x^56+120x^60+512x^62+210x^64+8x^68+51x^72+1x^112

The gray image is a code over GF(2) with n=248, k=10 and d=112.
This code was found by Heurico 1.16 in 2.06 seconds.