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  7  1  1  1  1 14  1  1 42  1  1  1  1  1  1  1  1 21  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31 16 48  4 19  1 19 16 48 36  4  1  0 31 36 26 38  7  6 46  9 29  1 38  7  9  6  1 43 40  1 28 48  9 11 38 43 44 20  1 19 29  5 14 13 44 29 20 21  9 46 29 27  2 45  2 36 27  3  1 23  4 13 43 36
 0  0 35  0 35  7 35  7 42 14  7 42  0  0 42 14 21 28 14 21 42 14 21  0 14 42 35 28 21 14 28  7 35 14 14 21 21 42 42 28 28 14 42 21  7 21 28  0 14 42 35 14 42 28  7 35 42 28  7 14  7  7 21 35 35 42 35  0  7 28  0 14 35 14  0
 0  0  0  7 28 28 21 42  0 42  7 42 35 28 21 21 42 21 35 35 14  0 42 14  7 35 35 28 28 21  0 14 42 21 14  7  0 28 42 14 21 28  0 21  7  7  0  7  0 21 14 35 14 35 14 35 14 14 28  0 35 21 21 21  0  7 14 28 35 28 42 28  7 21 35

generates a code of length 75 over Z49 who´s minimum homogenous weight is 427.

Homogenous weight enumerator: w(x)=1x^0+438x^427+294x^428+84x^429+420x^430+3252x^434+1470x^435+2394x^436+4872x^437+4614x^441+2520x^442+4662x^443+7560x^444+8106x^448+3612x^449+11970x^450+17976x^451+9606x^455+4620x^456+9702x^457+12390x^458+4680x^462+1890x^463+114x^469+186x^476+78x^483+54x^490+42x^497+24x^504+18x^511

The gray image is a code over GF(7) with n=525, k=6 and d=427.
This code was found by Heurico 1.16 in 7.01 seconds.