The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 21 35  1  1  1  1  1 14  1 28  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1 42  1  1  1  1 42  1  1  1 35  0  1  1  1  0  1  1  1  1  1  1  1  1 14  1  1  1  1 28  1  1  1  1  1
 0  1  0 35 21 42  1 17 16 48  8 31  9 34 19 40 27 36 45  1  1  5  2 43 38  3  1 13  1 33 41 30  4 25 40 42 18 10 14 20 12 15 29 37  0  1  5  8  3 46  1 47 35  9  1  7 27 36 17  1 32 12  1 34 44 24 23 28  1  5 21 41 38  1 33  4 15 13 20
 0  0  1 36 31 16 30 23  5 48  4 19  6 43 38  7 39 27  3  9 46  8 46 12 42  1  5 28 43 39 10 29 11 26  9 19 41 11 34  9  5 35 36 21  4  3 27 22 25 28 36 15 48  7 32  1 33  6 19 24 26 32 12 31 41 40 18 34 29 20  3 30 38 26 10 34  0 18 17

generates a code of length 79 over Z49 who´s minimum homogenous weight is 458.

Homogenous weight enumerator: w(x)=1x^0+3444x^458+3192x^459+504x^460+714x^461+384x^462+1680x^463+462x^464+11634x^465+7602x^466+2100x^467+3276x^468+690x^469+3654x^470+714x^471+13440x^472+8988x^473+2520x^474+3066x^475+678x^476+2352x^477+420x^478+12642x^479+7602x^480+3108x^481+3234x^482+576x^483+2604x^484+462x^485+10290x^486+5544x^487+6x^490+30x^497+24x^504+6x^511+6x^518

The gray image is a code over GF(7) with n=553, k=6 and d=458.
This code was found by Heurico 1.16 in 8.26 seconds.