The generator matrix

 1  0  1  1  1
 0  1  1 31 16
 0  0 35 21 42

generates a code of length 5 over Z49 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+60x^21+1470x^24+120x^28+6174x^30+8820x^31+162x^35

The gray image is a code over GF(7) with n=35, k=5 and d=21.
This code was found by Heurico 1.16 in 0.0029 seconds.