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  1  1  1  7  1  7  1  1  1  1  1 21  1  1  1  1  1  1  1 21  1  1  1  1  1 42  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31  1 16 19  7 36 48 38 15  4 46  9 26 46 29  6  1  6  1 11  7 38  9 26  1 21 10 23 20 40 35 41  1  4 29 23  3 20  1 11 47  3 40 47 46 10 28 21 39 28 33  3 33  0 21
 0  0 35 21 42  7 14 21  7 28 14  7 35  0 28 14 42  7  0 35 21 28 42  0  7 28 42 21 14 42 35 42  7 14 35 14  0 21 35  7 21  0 21 28 21  0  7 14 28 14  0 21 35 28  7 42 14 42 42 35 42 28  7 28  7

generates a code of length 65 over Z49 who´s minimum homogenous weight is 378.

Homogenous weight enumerator: w(x)=1x^0+330x^378+252x^379+462x^380+1260x^382+1764x^383+2058x^385+1008x^386+756x^387+1008x^389+588x^390+642x^392+168x^393+336x^394+1848x^396+1764x^397+1380x^399+630x^400+504x^401+30x^406+12x^413+6x^420

The gray image is a code over GF(7) with n=455, k=5 and d=378.
This code was found by Heurico 1.16 in 0.146 seconds.