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  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  7  1  1  1  1  1  7  1  1
 0  7  0  0  7  7 28 14 21  0  7 21 21 21 35 14 28 14  0  0 21 14 35 42  7 28 21  0 21 14 28  7 42  7 21  7 14 35 28  0 28 21 28  0 35 28  7  0 35  7 28 35 42 14 35 42 21  0 35 35 35 42  0  7 28  0
 0  0  7  0 35 28 21 35 42 21 21 21 35 35 28  0 42 42 42 42 35 14  7 14  7 21  0 21  0 28 42 35 35 21 28  7  7 14 35  0  7 21 35 42  0 35  7 28 28 14 28 21 42 35 14 14 42  7  7 42 42 35  7 42  7  0
 0  0  0  7 35  7 14 42 42 28  7  0 14 42 42 35  7 35 35 42 35 42  0 42 14  0  7 14 14  7 35 42 14 14 28  7 21  7  0 14 21 35 35  7 35 14 42 14  0 42 21 35 28 21 28 14  0 28 35 28  0 42 14 21  7 42

generates a code of length 66 over Z49 who´s minimum homogenous weight is 371.

Homogenous weight enumerator: w(x)=1x^0+90x^371+450x^378+294x^384+516x^385+3528x^391+348x^392+10584x^398+258x^399+240x^406+132x^413+138x^420+72x^427+84x^434+36x^441+18x^448+12x^455+6x^462

The gray image is a code over GF(7) with n=462, k=5 and d=371.
This code was found by Heurico 1.16 in 0.339 seconds.