The generator matrix

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

generates a code of length 62 over GR(16,4) who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+384x^171+822x^172+540x^173+1008x^174+1728x^175+2244x^176+1248x^177+1608x^178+2892x^179+3576x^180+1992x^181+2100x^182+3876x^183+4515x^184+2088x^185+2640x^186+3792x^187+4410x^188+2124x^189+2496x^190+3996x^191+4191x^192+1764x^193+1584x^194+2544x^195+2127x^196+852x^197+732x^198+720x^199+558x^200+132x^201+120x^202+36x^203+78x^204+12x^205+3x^212+3x^216

The gray image is a code over GF(4) with n=248, k=8 and d=171.
This code was found by Heurico 1.16 in 17 seconds.