The generator matrix

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

generates a code of length 50 over Z49 who´s minimum homogenous weight is 286.

Homogenous weight enumerator: w(x)=1x^0+3108x^286+2988x^287+2100x^288+126x^289+504x^290+2520x^291+630x^292+12306x^293+7980x^294+5082x^295+630x^296+1344x^297+3780x^298+504x^299+15456x^300+10812x^301+4704x^302+1302x^303+2268x^304+6048x^305+924x^306+18522x^307+9372x^308+4578x^309+36x^315+12x^322+6x^329+6x^343

The gray image is a code over GF(7) with n=350, k=6 and d=286.
This code was found by Heurico 1.16 in 3.55 seconds.