The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  1  1  1  2  1  1  1  2  1  1  1  2  1  1  1  1  1  1  2  1  1  2  2  1  1  1  1  1
 0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  4  4  4  0  4  4  0  0  4  4  0  4  4  0  4
 0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  0  4  4  4  0  0  4  4  0  4  0  0  4  4  0  4  4  4  0  4  4  4  0  4  4
 0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  0  4  4  4  0  4  4  4  0  0  0  0  4  0  4  0  0  4  4  4  0  0  4  4  0  4  4  0
 0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  0  4  4  0  4  0  4  4  0  4  0  4  4  0  4  0  0  0  4  4  0  4  4  0  4  4  4  4  0  0  4  4  0
 0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  4  4  0  0  4  0  4  0  0  0  0  4  0  0  4  0  0  4  4  0  4  0  0  4  0  0  4  4  4  4  4  0  4  4  0  0
 0  0  0  0  0  0  4  0  0  0  0  0  0  0  0  4  4  4  4  4  0  0  0  0  4  4  0  4  0  4  0  0  4  4  4  4  4  0  0  0  0  0  4  4  0  0  4  0  0  4  4  0  4  0  0  4  0  0  4  0
 0  0  0  0  0  0  0  4  0  0  0  0  0  0  4  4  4  0  4  0  0  0  4  4  4  0  4  0  0  0  4  0  0  0  4  4  0  0  4  4  4  0  4  0  0  0  0  4  4  0  4  4  0  0  4  0  0  4  0  0
 0  0  0  0  0  0  0  0  4  0  0  0  0  0  4  0  4  0  4  4  4  0  4  0  0  4  4  0  0  4  0  4  4  0  0  0  0  4  4  4  0  0  4  0  0  0  0  4  4  4  0  0  0  0  4  4  4  4  4  0
 0  0  0  0  0  0  0  0  0  4  0  0  0  4  0  0  4  0  0  4  4  4  0  4  4  0  0  4  4  4  4  4  0  4  0  0  0  4  0  4  0  4  0  4  0  0  4  4  4  0  0  4  0  4  0  4  0  4  0  0
 0  0  0  0  0  0  0  0  0  0  4  0  0  4  0  4  0  4  0  0  0  4  4  4  4  4  0  4  0  4  4  0  0  0  4  0  0  0  0  4  4  4  0  0  4  4  4  4  4  0  4  0  0  0  4  0  4  0  4  0
 0  0  0  0  0  0  0  0  0  0  0  4  0  4  4  4  0  4  0  4  4  0  4  4  4  0  0  0  4  4  4  4  0  4  4  4  0  0  4  0  0  4  0  4  4  4  4  4  0  4  4  0  4  4  0  0  4  0  0  0
 0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  0  0  4  4  4  0  0  0  0  4  0  4  4  4  0  0  4  4  0  4  4  0  4  0  4  4  0  0  4  4  4  4  0  0  0  0  0  4  4  0  0  4  0  4  0

generates a code of length 60 over Z8 who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+49x^42+137x^44+204x^46+303x^48+408x^50+488x^52+64x^53+603x^54+448x^55+681x^56+1344x^57+783x^58+2240x^59+17204x^60+2240x^61+787x^62+1344x^63+765x^64+448x^65+615x^66+64x^67+498x^68+409x^70+278x^72+179x^74+99x^76+45x^78+19x^80+13x^82+6x^84+1x^88+1x^106

The gray image is a code over GF(2) with n=240, k=15 and d=84.
This code was found by Heurico 1.16 in 67.3 seconds.