The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1  a a^6*X+a^2 a^3 a^6*X+a^4 a^5 a^6*X+a^6  0 a^6*X+1  a a^6*X+a^2 a^6*X+a^4  X a^3  X
 0  0 a^6*X a*X  X  0 a^3*X a^5*X a^4*X a^2*X a*X a^4*X a^3*X  X a^6*X a^5*X a^5*X

generates a code of length 17 over F8[X]/(X^2) who´s minimum homogenous weight is 104.

Homogenous weight enumerator: w(x)=1x^0+28x^104+280x^105+336x^107+1575x^112+3920x^113+1120x^115+9499x^120+13720x^121+2128x^123+84x^128+77x^136

The gray image is a linear code over GF(8) with n=136, k=5 and d=104.
This code was found by Heurico 1.16 in 0.0511 seconds.