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  1  1  2  8  2  4  2  2  0  2 12  2  2  2  0  2  2  2  8  2  4  8  2  2  2  2
 0  2  0 14  0  6  0 10  4  6 12  2  4 14 12 10  8  6  8  2  8 14  8 10 12 14  4 10 12  6  4  2  6  2 10  2 14  8  2  2  2  0  4 14  2 14 10  6  2 14  0  2  4  4  0  8
 0  0 12  4  8 12  4  8  4  0  0  4 12  8  8 12  8  8  4 12  0  0 12  4 12 12  8  0  4  4  0  8  0  4  8 12  4 12  0  4  8 12  4  0  4 12 12  4 12  8  4  8  8 12  0  8

generates a code of length 56 over Z16 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+128x^54+112x^55+98x^56+64x^57+44x^58+16x^59+40x^60+4x^62+5x^64

The gray image is a code over GF(2) with n=448, k=9 and d=216.
This code was found by Heurico 1.16 in 0.22 seconds.