The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7  7  1  1  1  1  1  1  1  1  1  1 42  1  1  1  1 21  1  1  1  1  1  1 21  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0 28 35  1  1  1  1  1  1 14  1
 0  1  1 31 16 48  4 19  0 36 31  1 16 19 48  4 36  7 38 26  9  9  6  6 44 20 46 46  1  1 32 32  7 43 38 26 21 43 45 33  1 21 22 45 33  1 44 20 23 41 42 22  1 11 38 19 40 45 23 41  3  0 22 11 37  6 40 36 21 46  7  1  1 41 32  9 40 29 31  1  7
 0  0 35 21 42  7 14 21  7 28 14  7 35  0  0 28 42 14 42 28  7 21 35 21 14 28  0 42 42 14  7 35 42 21 28 35 21  0  7 14 28 35  7  0 42 21 28 14  7 35 28 14 35 21 21 35  7 35  0 42 14 14 21 14  0  0  0 14  7  7 42 42  7 21 28 42 42 42 42 21 28

generates a code of length 81 over Z49 who´s minimum homogenous weight is 476.

Homogenous weight enumerator: w(x)=1x^0+3798x^476+6378x^483+2244x^490+4356x^497+6x^504+24x^511

The gray image is a code over GF(7) with n=567, k=5 and d=476.
This code was found by Heurico 1.16 in 0.213 seconds.