The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1 2a+2  1  1 2a+2  1  1  0  1  1  1 2a  1  1  1  1 2a  0  1  1  0 2a+2  1  1  1  1  1 2a+2  1 2a  1  1  1  1  1  1  1 2a+2  1 2a 2a  1  0  1  0
 0  1  0  0  2 2a+2  1 3a+2 3a+3  1 2a+3 a+1 2a+3  a  1 a+1 3a+3  1  a 3a+2  1 3a+3 3a 3a+1  1  a 2a+1  3 a+2  1  1 a+3 2a+1  1  1 3a+2 2a 2a+2  0 2a  1 3a  0  2  1 a+3 a+2  1 a+3  2  1 3a+1 2a+2  1  2  1 2a+1  1
 0  0  1  1 3a+2 3a+3  3 2a+3 2a+1 3a+3  a  a  0 3a a+3 2a a+3 2a+1  2 3a+1  a 2a+1 3a+1 3a+2  2 a+2 2a+1 a+3  1 2a+1 a+2  2 2a+2  2 3a+3  1 3a+1 a+2  3 a+2 2a+1  a  1  a 2a+1 a+1  3  0 2a+2 2a+3 3a+3 a+3  1 a+1 a+2  0 3a  2
 0  0  0 2a+2  0  0 2a+2 2a+2 2a+2  2  2 2a+2 2a 2a+2 2a  0  2  0  2  0 2a+2  0  2  2 2a+2  0 2a 2a+2  2 2a  2 2a+2 2a+2 2a 2a+2 2a 2a 2a  2  2  2 2a  2 2a+2  2  0  0  0  2 2a 2a 2a+2 2a+2 2a+2  0 2a+2 2a+2  0

generates a code of length 58 over GR(16,4) who´s minimum homogenous weight is 163.

Homogenous weight enumerator: w(x)=1x^0+696x^163+492x^164+2472x^167+816x^168+2592x^171+831x^172+2544x^175+753x^176+2076x^179+684x^180+1308x^183+351x^184+540x^187+147x^188+60x^191+9x^192+6x^196+3x^200+3x^208

The gray image is a code over GF(4) with n=232, k=7 and d=163.
This code was found by Heurico 1.16 in 1.02 seconds.