The generator matrix

 1  0  0  1  1  1  1  1 35  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 21  1  1  1  1  1 14  1  1  1  1  1  1  1  1  1 35  1  1  1  1  1  1  7  1  1  1  1  1  1  1  1  1  1  1 14  1  1  1  1  1  1  1  1  1  1  1
 0  1  0 35 36 31 16 17  1 48  1  9 34 22  7 27 38 30 19 33  4 26 11 39 14  5 46 40  1 29 38 13 39 30  1  6 44 21 15 18 14 13 33 21  1 24 45 26 32 20 42  1 20  1  3  3 24 31 37 34 22 16 27  1 44 46 23 27  9  4 23 18 12 39 15
 0  0  1 36  5 31 34  4 16 38  2 19 16 18  6 25 42 37 47 13 14 45 44 15 17 28 24 29 31 48 40 20 26 28 27 11 32 47 31 21 25 38 11 40 34 12 18  7 30  9 44 22 45 30 27  4 16 12 46 26 17 38  4  6  5  0  7 28  1 10  2 26  7 37 42

generates a code of length 75 over Z49 who´s minimum homogenous weight is 434.

Homogenous weight enumerator: w(x)=1x^0+3000x^434+2310x^435+924x^436+756x^437+2016x^438+1302x^439+1512x^440+10338x^441+6174x^442+2814x^443+1596x^444+3360x^445+1596x^446+1806x^447+13332x^448+7224x^449+3948x^450+1596x^451+3108x^452+1722x^453+1554x^454+12156x^455+7476x^456+4662x^457+2226x^458+3864x^459+1554x^460+1302x^461+8772x^462+3570x^463+18x^469+36x^476+18x^483+6x^490

The gray image is a code over GF(7) with n=525, k=6 and d=434.
This code was found by Heurico 1.16 in 6.02 seconds.