The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  1  1  1  1  7  1  1  1  1  1  1  1  1  7  1  1  1  1  1  1  1  1  1  1  1  1  1  1 35  1  1  1 35  1  1  1  1 14  1  1  1  1  1  1  1  1  1  1  1  1  7  1 14  1  1  0  1  1 21
 0  1  1 31 16 48  4 19  0 36 31  1 16 19  7 36  1  9 48 15  4  7 35  9 46  1 37 38 26  6 29 38  6 46 26 21  3 13 11 47  1 29 24 11  1  9  6 19  3  1 44 48  5  0 36 41 21 37 15 33 42 33 21 17  1 22 45  1  2 13  1
 0  0 35 21 42  7 14 21  7 28 14  7 35  0 28 14 35  7 42  0 42 21 35 28 21 21 14  7 42  0 21 28 14  7 35 42 35 28  0 14 14  7 42 35 42  0 21 28  0 28 21 35  7 14 42 28 28 28 21 14 35 35 21 21 14 28 42 42 35 21 28

generates a code of length 71 over Z49 who´s minimum homogenous weight is 415.

Homogenous weight enumerator: w(x)=1x^0+2184x^415+462x^416+882x^419+174x^420+4284x^422+798x^423+294x^426+60x^427+2520x^429+252x^430+882x^433+36x^434+3360x^436+546x^437+66x^441+6x^448

The gray image is a code over GF(7) with n=497, k=5 and d=415.
This code was found by Heurico 1.16 in 79.6 seconds.