The generator matrix

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

generates a code of length 70 over Z49 who´s minimum homogenous weight is 404.

Homogenous weight enumerator: w(x)=1x^0+3612x^404+210x^405+462x^406+1134x^407+3738x^408+2268x^409+1386x^410+9492x^411+1890x^412+1614x^413+3570x^414+7770x^415+3654x^416+2142x^417+11214x^418+2646x^419+2010x^420+3570x^421+7644x^422+3528x^423+1260x^424+12264x^425+3486x^426+2346x^427+4074x^428+7602x^429+2898x^430+1386x^431+8694x^432+36x^434+18x^441+24x^448+6x^455

The gray image is a code over GF(7) with n=490, k=6 and d=404.
This code was found by Heurico 1.16 in 65 seconds.