The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  7  1  1  1  1  1  1  1  1  1  1  7  1  1  1  1  1  1 14  1  1  1  1
 0  1  1 31 16  0  7  7 48 14 48  4 19 14 36 31 19  4  1 16  6  6  1 36 38  9 46 26 38 46 29  9 26  1 34 18 15  3 44 40  1  3 20 32 12
 0  0 35 21 42  7 14 28  7 42 35 28  0 35 21 14 21 14 35  0 21 42 28  0  7 28 21 42 28 35 42 14 28 21  0  7  7 35 21 14 14  0 28 42 35

generates a code of length 45 over Z49 who´s minimum homogenous weight is 261.

Homogenous weight enumerator: w(x)=1x^0+1260x^261+3150x^262+174x^266+1890x^268+2520x^269+138x^273+3024x^275+4620x^276+18x^280+6x^287+6x^315

The gray image is a code over GF(7) with n=315, k=5 and d=261.
This code was found by Heurico 1.16 in 0.0791 seconds.