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  7  1  7  1  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 42  7 21
 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 46  1 46  1 20 32  7 43 38 26 32 21 43 45 33  1 21 22 45 33  1 44 20 23 41 42 22  1 11 23 41 26 12 19 37 48 37 12  6 20 23 40 37 41 33  1  1  1  1
 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  0 14 42 42 28  7 42 21 28 35 35 21  0  7 14 28 35  7  0 42 21 28 14  7 35 28 14 35 21 21 42 14 42  7 14 28  0 21  0 21 42 28 35  7  0 14  0 21  7

generates a code of length 74 over Z49 who´s minimum homogenous weight is 434.

Homogenous weight enumerator: w(x)=1x^0+468x^434+1764x^435+630x^436+2646x^437+1050x^441+2394x^442+504x^443+882x^444+276x^448+504x^449+924x^450+2646x^451+570x^455+1512x^456+6x^462+24x^469+6x^476

The gray image is a code over GF(7) with n=518, k=5 and d=434.
This code was found by Heurico 1.16 in 0.182 seconds.