The generator matrix

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

generates a code of length 15 over Z49 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+144x^70+354x^77+420x^84+14406x^90+510x^91+714x^98+258x^105

The gray image is a code over GF(7) with n=105, k=5 and d=70.
This code was found by Heurico 1.16 in 0.0468 seconds.