The generator matrix

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

generates a code of length 64 over Z8 who´s minimum homogenous weight is 55.

Homogenous weight enumerator: w(x)=1x^0+206x^55+573x^56+876x^57+1306x^58+1696x^59+2039x^60+2356x^61+2798x^62+3002x^63+3049x^64+3170x^65+2807x^66+2478x^67+2001x^68+1584x^69+1179x^70+692x^71+440x^72+244x^73+155x^74+50x^75+20x^76+20x^77+11x^78+4x^79+5x^80+6x^81

The gray image is a code over GF(2) with n=256, k=15 and d=110.
This code was found by Heurico 1.16 in 33.3 seconds.