The generator matrix

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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 62.

Homogenous weight enumerator: w(x)=1x^0+234x^62+396x^63+608x^64+616x^65+753x^66+660x^67+637x^68+672x^69+777x^70+576x^71+580x^72+472x^73+338x^74+276x^75+251x^76+128x^77+127x^78+44x^79+33x^80+11x^82+2x^84

The gray image is a code over GF(2) with n=276, k=13 and d=124.
This code was found by Heurico 1.11 in 1.42 seconds.