The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  7  1  1  1  7  1  1  1  1  1  1  1  1  1 35  1  1  1 35  1  1  1 14  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0 14  7
 0  1  1 31 16 48  4 19  0 36 31  1 16 19 48  4 36  7 38 26  9  6 46  1  9  6 46  1  7 29 38 26 30 18 21 15 45  1  2 40 18  1 13 34 12  1 34 39 40 30  0 35 21 35  9 30 40 26 14 23 19  1  1  1
 0  0 35 21 42  7 14 21  7 28 14  7 35  0  0 28 42 14 42 28  7 35  7 35 21 21 35 21 35  7  0 42 28 42 21  0  7 42 14 14  0 14 28 14 35 28 42 21  7  0 28 42  0 21 42  7 21 14 35 14 28 14 42  0

generates a code of length 64 over Z49 who´s minimum homogenous weight is 373.

Homogenous weight enumerator: w(x)=1x^0+1218x^373+840x^375+1764x^377+174x^378+3402x^380+1260x^382+588x^384+90x^385+1302x^387+2016x^389+1764x^391+24x^392+2310x^394+18x^399+24x^406+12x^413

The gray image is a code over GF(7) with n=448, k=5 and d=373.
This code was found by Heurico 1.16 in 23.1 seconds.