The generator matrix

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

generates a code of length 63 over Z8 who´s minimum homogenous weight is 39.

Homogenous weight enumerator: w(x)=1x^0+20x^39+28x^40+94x^41+113x^42+184x^43+282x^44+314x^45+470x^46+580x^47+771x^48+764x^49+781x^50+966x^51+781x^52+722x^53+807x^54+828x^55+1015x^56+1478x^57+2026x^58+2986x^59+3903x^60+4656x^61+5331x^62+5428x^63+5435x^64+4892x^65+4021x^66+2964x^67+2044x^68+1472x^69+960x^70+786x^71+756x^72+744x^73+805x^74+916x^75+768x^76+728x^77+748x^78+622x^79+486x^80+334x^81+295x^82+200x^83+96x^84+52x^85+24x^86+32x^87+16x^88+6x^89+3x^90+2x^92

The gray image is a code over GF(2) with n=252, k=16 and d=78.
This code was found by Heurico 1.16 in 98.2 seconds.