The generator matrix

 1  0  0  1  1  1 X^2+X  1  1  0  X  1  1  X  1 X^2  1  0 X^2  X  1 X^2+X  0  1  1  1  1  1  0  1 X^2 X^2  1 X^2+X  1 X^2+X  1  1  1 X^2+X  1  1
 0  1  0  0  1 X+1  1 X^2+X X^2+1  1  X X^2+1 X^2+X  1 X^2+X  1 X^2+X+1  1 X^2  1 X^2+X+1  1  0  X X+1 X^2+X  X X+1  1 X^2+X+1  1  X  X X^2+X  1  1  0 X^2+X  1  0 X^2  0
 0  0  1  1  1  0  1 X^2+1  1  1  1  0 X^2  X  X  X X+1  X  1  1  0 X+1  1 X^2+X+1  0 X^2+X+1 X+1 X+1 X^2 X^2+X X+1  1  0  1  1  X X+1  0 X^2  1 X^2+X+1 X^2
 0  0  0  X  0  0 X^2 X^2 X^2+X  X  X X^2+X  X X^2+X  0 X^2  0  X  X X^2 X^2  X X^2 X^2 X^2+X X^2+X  X X^2+X  X  X  X  0 X^2  X  X  0 X^2+X  X X^2+X  0  X  X
 0  0  0  0  X X^2  X X^2+X X^2 X^2 X^2+X  X  X X^2+X X^2  0  X X^2+X X^2+X X^2  X  X  X X^2 X^2 X^2+X  0  X  0 X^2+X X^2+X  X X^2+X  0  X X^2+X  0 X^2+X  0  0  X  X

generates a code of length 42 over Z2[X]/(X^3) who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+352x^36+320x^37+604x^38+548x^39+1041x^40+680x^41+1190x^42+696x^43+981x^44+512x^45+648x^46+260x^47+214x^48+56x^49+46x^50+35x^52+8x^54

The gray image is a linear code over GF(2) with n=168, k=13 and d=72.
This code was found by Heurico 1.16 in 65.8 seconds.