The generator matrix

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

generates a code of length 60 over Z8 who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+138x^52+76x^53+449x^54+316x^55+690x^56+496x^57+848x^58+648x^59+993x^60+620x^61+876x^62+556x^63+565x^64+280x^65+288x^66+80x^67+160x^68+55x^70+39x^72+12x^74+4x^76+1x^80+1x^84

The gray image is a code over GF(2) with n=240, k=13 and d=104.
This code was found by Heurico 1.16 in 2.76 seconds.