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

generates a code of length 41 over Z49 who´s minimum homogenous weight is 224.

Homogenous weight enumerator: w(x)=1x^0+180x^224+456x^231+480x^238+372x^245+14406x^246+288x^252+174x^259+234x^266+120x^273+84x^280+12x^287

The gray image is a code over GF(7) with n=287, k=5 and d=224.
This code was found by Heurico 1.16 in 0.185 seconds.