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

generates a code of length 90 over Z8 who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+87x^68+12x^70+2x^71+278x^72+10x^73+74x^74+44x^75+366x^76+92x^77+225x^78+230x^79+541x^80+438x^81+626x^82+796x^83+1151x^84+1532x^85+1566x^86+2260x^87+2171x^88+2752x^89+2324x^90+2842x^91+2029x^92+2254x^93+1605x^94+1478x^95+1030x^96+878x^97+800x^98+432x^99+366x^100+184x^101+467x^102+94x^103+131x^104+50x^105+273x^106+14x^107+33x^108+2x^109+134x^110+8x^112+57x^114+23x^118+5x^122+1x^130

The gray image is a code over GF(2) with n=360, k=15 and d=136.
This code was found by Heurico 1.16 in 99.6 seconds.