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

generates a code of length 34 over Z49 who´s minimum homogenous weight is 175.

Homogenous weight enumerator: w(x)=1x^0+654x^175+1470x^182+1800x^189+2166x^196+14406x^198+2814x^203+86436x^205+3216x^210+2652x^217+1476x^224+516x^231+42x^238

The gray image is a code over GF(7) with n=238, k=6 and d=175.
This code was found by Heurico 1.16 in 11.9 seconds.