The generator matrix

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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 61.

Homogenous weight enumerator: w(x)=1x^0+44x^61+233x^62+360x^63+523x^64+656x^65+669x^66+750x^67+712x^68+696x^69+674x^70+608x^71+547x^72+520x^73+419x^74+288x^75+199x^76+116x^77+70x^78+36x^79+29x^80+8x^81+12x^82+2x^83+5x^84+8x^85+3x^86+4x^87

The gray image is a code over GF(2) with n=276, k=13 and d=122.
This code was found by Heurico 1.16 in 2.52 seconds.