The generator matrix

 1  0  0  1  1  1  1  1 35  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  0 36 31 16 35 17  1 48  1  9 34 18 19 28 29 38  2 39 13
 0  0  1  5 31 34 36  4 16 38  2 21 46 37 40 30 48 12 17 15  1

generates a code of length 21 over Z49 who´s minimum homogenous weight is 114.

Homogenous weight enumerator: w(x)=1x^0+126x^114+2898x^115+5796x^116+138x^119+294x^120+1512x^121+14490x^122+15456x^123+14544x^126+1764x^127+4536x^128+29946x^129+26082x^130+18x^133+6x^140+42x^147

The gray image is a code over GF(7) with n=147, k=6 and d=114.
This code was found by Heurico 1.16 in 1.15 seconds.