The generator matrix

 1  0  0  0  1  1  1  4  1  1  2  0  6  1  4  1  1
 0  1  0  0  1  4  5  1  0  1  1  2  1  7  6  1  0
 0  0  1  0  1  5  2  5  3  7  3  1  1  1  1  6  2
 0  0  0  1  4  1  5  5  2  3  0  3  2  2  6  7  0

generates a code of length 17 over Z8 who´s minimum homogenous weight is 13.

Homogenous weight enumerator: w(x)=1x^0+128x^13+370x^14+516x^15+760x^16+640x^17+656x^18+504x^19+362x^20+128x^21+22x^22+4x^23+5x^24

The gray image is a code over GF(2) with n=68, k=12 and d=26.
This code was found by Heurico 1.11 in 0.0517 seconds.