The generator matrix

 1  0  0  1  1  1  2  1  1  2  6  1  6  1  1  1  1  0  1  4  1  2  6  1  1  0  1  2  1  0  6  1  1  1  4  1  1  6  1  1  1  4  4  2  1  0  1  1  1  6  1  1  1  0  1  2  6  6  1  1  6  1  1  2  4  1  1
 0  1  0  0  1  3  1  1  7  6  1  6  1  2  2  1  4  1  1  1  4  0  1  2  3  4  7  0  2  1  1  1  4  5  1  0  6  6  4  2  5  6  1  1  4  1  5  7  5  1  3  0  6  1  4  2  4  1  4  1  1  6  0  1  1  1  1
 0  0  1  1  1  0  1  3  6  1  0  4  3  3  1  5  6  2  0  5  4  1  6  7  5  1  0  1  0  1  1  3  5  6  3  7  4  1  1  4  6  1  0  1  0  6  6  0  4  6  1  5  1  4  6  1  1  4  1  3  7  5  4  4  2  1  3
 0  0  0  2  0  0  0  0  0  0  4  4  4  2  0  6  2  6  6  6  6  4  2  4  6  2  6  2  2  4  6  0  2  0  6  6  0  2  4  2  2  6  0  6  0  4  4  2  6  6  2  6  4  2  2  6  4  2  4  2  2  6  2  2  4  0  0
 0  0  0  0  2  6  0  6  2  0  4  4  0  0  0  6  0  0  6  4  4  2  4  0  2  4  0  0  6  2  6  4  6  0  0  2  6  2  6  4  0  6  6  4  4  6  0  2  4  0  2  4  6  6  6  6  4  2  2  6  6  6  2  6  6  4  2
 0  0  0  0  0  4  0  4  0  4  4  4  4  4  4  4  0  4  0  0  4  4  0  0  0  0  4  4  4  0  0  4  4  4  4  0  0  4  4  4  0  0  0  4  4  4  0  4  0  0  0  4  0  4  0  4  4  4  0  0  4  0  0  0  0  0  4
 0  0  0  0  0  0  4  4  4  4  4  4  0  4  0  0  4  0  0  0  0  4  4  4  4  4  4  0  0  4  0  4  4  0  4  0  0  0  0  0  0  0  4  0  0  4  0  0  4  0  0  0  4  4  4  4  4  0  0  4  0  4  0  4  4  0  0

generates a code of length 67 over Z8 who´s minimum homogenous weight is 57.

Homogenous weight enumerator: w(x)=1x^0+132x^57+310x^58+560x^59+854x^60+1160x^61+1607x^62+2036x^63+2416x^64+2738x^65+3039x^66+3182x^67+3014x^68+2660x^69+2496x^70+2172x^71+1524x^72+1084x^73+748x^74+448x^75+228x^76+148x^77+105x^78+48x^79+27x^80+14x^81+14x^82+2x^83+1x^98

The gray image is a code over GF(2) with n=268, k=15 and d=114.
This code was found by Heurico 1.16 in 62.5 seconds.