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  2  2  2  2  2  1  2  1  1  1  1  1  1  2  2  2  2  2  2  2  2  2  2  1  1  1  1  4  4  4  4  4  4  4  4  4  4  4  4  4  4  4
 0 12  0  4  0  0  4 12  8  8 12  4  8  8 12  4  0  8  4 12  0  8  4 12  8  8  4 12 12  4  0  0 12  4  8  0 12  4  4 12  8  0 12  4  0  0  8  8  0  8  4 12  0 12  4  4  8  4  0  4  8  0  8 12 12 12  8
 0  0 12  4  8  4 12  8  8  4 12  8  0 12  4  0  0  4  4  0  8 12 12  8  8  4  4  4  0  8 12 12 12  8  0  4  4  0 12 12 12  4  8  0  0  8  8  0  0  4  4  0 12  8  4 12 12  0  4  8  8  8  0  0 12  4  4

generates a code of length 67 over Z16 who´s minimum homogenous weight is 66.

Homogenous weight enumerator: w(x)=1x^0+72x^66+128x^67+38x^68+12x^70+1x^72+4x^82

The gray image is a code over GF(2) with n=536, k=8 and d=264.
This code was found by Heurico 1.16 in 45.5 seconds.