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  1  1  1  1  1  1  1  1
 0  2  0  0  0  2  6  6  0  0  0  0  2  6  6  2  0  0  2  6  0  6  0  2  4  6  4  2  4  2  4  6  4  2  2  2  4  4  6  4  0  6  0  4  6  6  4  2  4  6  6  4  6  4  0  2  0  4  4  2
 0  0  2  0  2  2  2  0  4  6  4  6  6  4  6  4  0  2  2  4  4  2  6  4  4  6  0  6  6  0  2  0  2  2  0  0  0  6  2  0  2  2  6  0  4  6  4  4  2  6  0  2  0  4  0  6  4  4  6  6
 0  0  0  2  2  0  2  2  4  6  6  4  4  6  6  4  4  6  4  2  2  6  0  0  0  0  6  2  2  6  4  0  2  6  4  2  0  0  4  2  4  0  2  4  0  2  6  6  0  4  6  6  4  4  6  6  0  2  6  0

generates a code of length 60 over Z8 who´s minimum homogenous weight is 57.

Homogenous weight enumerator: w(x)=1x^0+8x^57+28x^58+56x^59+326x^60+56x^61+28x^62+8x^63+1x^120

The gray image is a code over GF(2) with n=240, k=9 and d=114.
This code was found by Heurico 1.16 in 0.0989 seconds.