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  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  2  1  1  1  1  2  2  1  8  2  1  2  4  2  1  1  1  2  2  2  1  1  8  1  4  1  2  2  1  2  2  0  1  4  4  1
 0 12  0  0  0  0  0  0  0  0  8  4 12 12  8  0 12 12  4  4  8  4  0 12 12  4  4  4 12  8  8  4 12  8  4 12 12  8  8  4 12 12  8  4 12  8  8  8 12  4 12  8  8  8 12  8  8  8  8  0 12  4  8  4  8  8  0  4  8  8  8  0  4  8  0
 0  0 12  0  0  0  0  0  0  0 12  8  4 12  4  4  4 12  0  8 12 12  4  4 12  8  0 12  0  4 12  0  8  0  8  4 12  8 12 12 12  8  8  0 12  8  0  0 12  0  8 12  4 12  0  8  0  4  8  4  8 12  0  0  4 12  4  8 12  0  0  8  8  4  0
 0  0  0 12  0  0  8 12 12  4  4 12  8 12 12  0  8 12 12  8  0  8 12 12 12  0  4  0  4  4  8  0 12  0  8 12  4  0  8  0 12  0  0  4  8 12  0  4  0  8  4  8 12  0  0  8 12  4 12  4  0  8  8  8  0  4  4  8  0  8  8 12  8  0  0
 0  0  0  0 12  0 12 12  4  8  0  0  0  0  8  0 12  4  4 12  4  0  4 12  0 12 12 12  8 12  4  0  8  0 12  0 12  4 12  8  8  8 12  8  0  4 12  0  4  4  0 12  4  8  8 12  8 12 12  0  8  8  0  8 12  8  4  0  8  8  4  8  4  0  0
 0  0  0  0  0 12  4  8  4  4  0  0  0  0  4  4  0  8  4  4  0  4 12 12 12  8  8 12  4  0 12  4  4  8  0  8 12 12  8  0 12  8 12  0  4  8  8  4  0 12  8  0  8  8  0 12  8  4  0  4 12  8  4  4  8 12  8  4 12 12  0  0  0  0  0

generates a code of length 75 over Z16 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+49x^64+94x^65+158x^66+224x^67+329x^68+344x^69+392x^70+632x^71+987x^72+1682x^73+2162x^74+2362x^75+2210x^76+1592x^77+1063x^78+650x^79+398x^80+270x^81+209x^82+184x^83+109x^84+88x^85+56x^86+36x^87+41x^88+26x^89+23x^90+6x^91+4x^92+2x^95+1x^102

The gray image is a code over GF(2) with n=600, k=14 and d=256.
This code was found by Heurico 1.16 in 9.05 seconds.