The generator matrix

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

generates a code of length 79 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+48x^64+159x^66+20x^67+307x^68+120x^69+587x^70+292x^71+1151x^72+536x^73+2112x^74+960x^75+3438x^76+1392x^77+4531x^78+1544x^79+4518x^80+1392x^81+3468x^82+980x^83+2102x^84+536x^85+1051x^86+276x^87+548x^88+120x^89+284x^90+24x^91+118x^92+69x^94+37x^96+25x^98+19x^100+2x^102+1x^104

The gray image is a code over GF(2) with n=316, k=15 and d=128.
This code was found by Heurico 1.16 in 58.5 seconds.