The generator matrix

 1  0  1  1  1  1  1  1  1  0  1  1  1  0  1  1  1  1  1  2  1  0  1 2a  1  1
 0  1  1  a 3a+3  0 2a+3  a a+1  1  0  a 2a+3  1 a+1 a+1  a 2a+3 a+1  1 a+2  1  0  1  2  0
 0  0 2a+2  0  0  0  2  2  2  2  2 2a 2a+2  2  0  2 2a+2  0  0  2 2a+2  2  2 2a+2 2a  0
 0  0  0  2  0  2 2a+2 2a  0  2 2a  2  2  0  0  0 2a+2 2a+2 2a+2 2a+2  2 2a 2a+2 2a+2  0  0
 0  0  0  0 2a+2 2a+2  2  0 2a+2  2  2  2  2 2a+2 2a  0  2 2a  0 2a  0  2 2a+2  0 2a 2a

generates a code of length 26 over GR(16,4) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+51x^64+12x^66+96x^67+423x^68+144x^70+576x^71+963x^72+648x^74+1536x^75+1983x^76+1296x^78+2496x^79+2283x^80+972x^82+1440x^83+1245x^84+105x^88+93x^92+21x^96

The gray image is a code over GF(4) with n=104, k=7 and d=64.
This code was found by Heurico 1.16 in 0.456 seconds.