The generator matrix

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

generates a code of length 95 over GR(64,4) who´s minimum homogenous weight is 632.

Homogenous weight enumerator: w(x)=1x^0+133x^632+224x^638+672x^639+728x^640+672x^641+784x^643+4536x^646+5600x^647+2387x^648+6384x^649+3136x^651+9128x^654+8848x^655+4459x^656+14448x^657+6048x^659+13048x^662+14672x^663+12460x^664+35280x^665+11200x^667+20440x^670+18704x^671+11487x^672+29232x^673+7504x^675+9968x^678+8848x^679+287x^680+203x^688+217x^696+175x^704+77x^712+56x^720+42x^728+35x^736+21x^744

The gray image is a code over GF(8) with n=760, k=6 and d=632.
This code was found by Heurico 1.16 in 23.6 seconds.