The generator matrix

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

generates a code of length 42 over Z49 who´s minimum homogenous weight is 238.

Homogenous weight enumerator: w(x)=1x^0+2604x^238+2940x^239+126x^240+756x^241+840x^242+2436x^243+2184x^244+9012x^245+7602x^246+1512x^247+4662x^248+3024x^249+3948x^250+2688x^251+11700x^252+11256x^253+4536x^254+8988x^255+4368x^256+5964x^257+3360x^258+13980x^259+9072x^260+24x^266+42x^273+18x^280+6x^287

The gray image is a code over GF(7) with n=294, k=6 and d=238.
This code was found by Heurico 1.16 in 2.91 seconds.