The generator matrix

 1  1  1  1  1  1  1
 0  7  0  7 21 42 42
 0  0  7 35 21  7 21

generates a code of length 7 over Z49 who´s minimum homogenous weight is 35.

Homogenous weight enumerator: w(x)=1x^0+126x^35+2142x^42+132x^49

The gray image is a code over GF(7) with n=49, k=4 and d=35.
This code was found by Heurico 1.16 in 0.000381 seconds.