The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7  1  1  7  7  1  7
 0  7  0  0  7  7 28 14 21  0  7 21 21 21 35 14 28 14  0  0 21 14 35 42  7 28 21  0  7  0 21  7  7 14  7  7 42 21
 0  0  7  0 35 28 21 35 42 21 21 21 35 35 28  0 42 42 42 42 35 14  7 14  7 21  0 21  7 14 28  0  7  0  0 21 35 21
 0  0  0  7 35  7 14 42 42 28  7  0 14 42 42 35  7 35 35 42 35 42  0 42 14  0  7 14 28 35  7  7 42 14 35 14  7 21

generates a code of length 38 over Z49 who´s minimum homogenous weight is 210.

Homogenous weight enumerator: w(x)=1x^0+414x^210+168x^211+498x^217+1260x^218+366x^224+5208x^225+384x^231+7770x^232+270x^238+198x^245+150x^252+108x^259+12x^266

The gray image is a code over GF(7) with n=266, k=5 and d=210.
This code was found by Heurico 1.16 in 0.881 seconds.