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  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  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 13  3 29 44 29 20 14  7  9 20 29 21 36 44 14  6 14 44 43 21 27 16 48 14  9 11  0
 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  7 42 42 35 14 28 28 28 14  7  7 14 35  7 35  7 28 28  0  7 42 21 42 42 42 35  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 14 28 14 35 35 14 35 21  7  0 21  0 14  7  7 42 42 42 42 28 14 28  7 21 28  0  7

generates a code of length 76 over Z49 who´s minimum homogenous weight is 434.

Homogenous weight enumerator: w(x)=1x^0+684x^434+420x^435+1848x^440+5316x^441+3066x^442+4326x^447+9618x^448+5166x^449+8568x^454+19554x^455+9240x^456+11886x^461+20046x^462+9282x^463+2184x^468+4350x^469+1638x^470+114x^476+126x^483+96x^490+42x^497+24x^504+36x^511+18x^518

The gray image is a code over GF(7) with n=532, k=6 and d=434.
This code was found by Heurico 1.16 in 7.09 seconds.