The generator matrix

 1  0  0  1  1  1  8 12  1  1 10  1  1  1 12 10  1  6  1 10  1  1  4  2  1  2  1  1  1  1  1 14  1  6  4  1  8  8  6 14  1  1  1  1  1  1  2  8  1  0  1  4 14  1  1  0  1  0  2  1 12 14  1  0  1
 0  1  0  0  5  3  1  4 15 10  1 14  7  9  1 10 10  1  1  1  0  7  1  1  8  4 11 14 13  7  6  1  9  4  1  0  1  1 12  1  8  8  6  2  2 15  6  6  1  6  8  1  1  2  6  1 15  1  8  4 10  1 12  1  5
 0  0  1  1  1  0  5  1 11 11  2  4 10 15  3  1 13  8  0  9 14 13 10  7  7  1  6 14  2 15 13  4  9  1 15  6  1  0  1 15  1 11  0  3 10 15  1  1 11  1  5 13 14  2  3 14  6 14  1  6  1 13  4 15  0
 0  0  0  2 10  8 10  2 14  6  4  0  4  6 14 10 10  8  4 14  8 14  8  2 10  6  2 14 14 12  4  2  8 12  0 14 12  2  0  0  4  4  6 12  8  2 12  0  0 10  0 14 14  2  8  8  6 12 14 10 12  4 12 10  8

generates a code of length 65 over Z16 who´s minimum homogenous weight is 59.

Homogenous weight enumerator: w(x)=1x^0+396x^59+1127x^60+2054x^61+2919x^62+3888x^63+4377x^64+4152x^65+4125x^66+3432x^67+2638x^68+1826x^69+899x^70+504x^71+220x^72+92x^73+55x^74+20x^75+19x^76+20x^77+2x^78+2x^80

The gray image is a code over GF(2) with n=520, k=15 and d=236.
This code was found by Heurico 1.16 in 10.3 seconds.