The generator matrix

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

generates a code of length 69 over Z49 who´s minimum homogenous weight is 398.

Homogenous weight enumerator: w(x)=1x^0+2814x^398+576x^399+1050x^400+672x^401+2016x^402+3192x^403+2940x^404+9828x^405+1590x^406+3528x^407+2352x^408+4284x^409+4494x^410+3864x^411+10836x^412+2610x^413+4200x^414+2688x^415+3906x^416+4956x^417+2856x^418+11676x^419+3696x^420+5628x^421+2520x^422+4200x^423+3822x^424+2688x^425+8064x^426+24x^427+42x^434+24x^441+12x^448

The gray image is a code over GF(7) with n=483, k=6 and d=398.
This code was found by Heurico 1.16 in 61.7 seconds.