The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1  1  1  1  1  1  1  1  1 28 14  1  1  1  1  1  1 35  1  1  1  1  1  1 42  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 42  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1
 0  1  0 35 21 36 17 30 34 29 31 37 48  5  4 18  1 16  6 22 26 24 20 40 32 45  1  1 11  9 29 24 15 21  1  7 19  3 27 20 43  1  6 46  3 28 23 46 22 37 39 45 30 31 11  9 36 39 40 23  1  9 15 18 29 37 47 43  7  0 12 28 38 39 21  0
 0  0  1 36 31  5  4 18 16 48  7  9  6 29 40  8 34 28 12 39 27 45 46  3 23 37  9  5 10  8 42 26 24 25 29 23 19  0 38 15 35 45 26  2 11 21 46 41 24 45 15 43  1 38 32 35 47 12 46 25 12 43  3  4 14 48 33 47 12 22  7 10 41 27  1 15

generates a code of length 76 over Z49 who´s minimum homogenous weight is 440.

Homogenous weight enumerator: w(x)=1x^0+2982x^440+2628x^441+126x^442+798x^443+2310x^444+2478x^445+2772x^446+8946x^447+6246x^448+1302x^449+1260x^450+3696x^451+3318x^452+3570x^453+10542x^454+6582x^455+1134x^456+2142x^457+4200x^458+3570x^459+3948x^460+10710x^461+7974x^462+1554x^463+1974x^464+4200x^465+2982x^466+2058x^467+7980x^468+3612x^469+18x^476+12x^483+12x^490+6x^497+6x^504

The gray image is a code over GF(7) with n=532, k=6 and d=440.
This code was found by Heurico 1.16 in 6 seconds.