The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  1 5X  1  1  1  1 2X  1  1  1  1
 0  1  0 5X 3X 6X 5X+1  2  3  1 5X+2 X+3 5X+4 5X+6  4  6  1 X+1 5X+3 4X+4 3X+1  1 X+6  5 2X+5 3X+2
 0  0  1 5X+1  3 5X+2 5X+5  4  X X+4 4X+6 4X+3 6X+5 4X+2 X+1 2X+6 3X+4 3X+6 2X+4  6 6X+1 6X+2 6X+4 6X+3 X+5  5

generates a code of length 26 over Z7[X]/(X^2) who´s minimum homogenous weight is 145.

Homogenous weight enumerator: w(x)=1x^0+1890x^145+5040x^146+6816x^147+882x^150+9450x^152+13440x^153+10200x^154+6174x^156+5292x^157+19530x^159+22680x^160+16218x^161+18x^175+18x^182

The gray image is a linear code over GF(7) with n=182, k=6 and d=145.
This code was found by Heurico 1.16 in 16.2 seconds.