The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31 16 48  4 19  1 19 16 36 48  4  1  0 31 38 36  7  6 26 40  6  9 23 21 28  6 44  5  9 41 46  0
 0  0 35  0 35  7 35  7 42 14  7 42  0  0 42 14 21 28 21 14 42 14 21  7 35 21 21 21 14 42  0 35  7  0 35 21 42 28 14  7  7  0
 0  0  0  7 28 28 21 42  0 42  7 42 35 28 21 21 42 21 35 35 14  0 42  0 35 21  7 28 14 35 42 14 21  7  7  0 35 35 28  0 14 21

generates a code of length 42 over Z49 who´s minimum homogenous weight is 231.

Homogenous weight enumerator: w(x)=1x^0+372x^231+42x^234+504x^235+798x^237+3888x^238+756x^241+3780x^242+2016x^244+7806x^245+4536x^248+15624x^249+5922x^251+18072x^252+9072x^255+23310x^256+5670x^258+14922x^259+162x^266+168x^273+162x^280+60x^287+6x^294

The gray image is a code over GF(7) with n=294, k=6 and d=231.
This code was found by Heurico 1.16 in 3.56 seconds.