The generator matrix

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

generates a code of length 81 over Z8 who´s minimum homogenous weight is 69.

Homogenous weight enumerator: w(x)=1x^0+170x^69+574x^70+1176x^71+1771x^72+2934x^73+3489x^74+5274x^75+5978x^76+8476x^77+8408x^78+10832x^79+10126x^80+11614x^81+10587x^82+11416x^83+9053x^84+8660x^85+6067x^86+5052x^87+3258x^88+2502x^89+1412x^90+1016x^91+499x^92+364x^93+179x^94+106x^95+32x^96+30x^97+4x^98+6x^99+2x^100+2x^101+2x^103

The gray image is a code over GF(2) with n=324, k=17 and d=138.
This code was found by Heurico 1.11 in 292 seconds.