The generator matrix

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

generates a code of length 30 over Z7[X]/(X^2) who´s minimum homogenous weight is 161.

Homogenous weight enumerator: w(x)=1x^0+258x^161+84x^162+672x^163+798x^165+786x^168+1512x^169+5040x^170+2016x^172+3978x^175+9072x^176+20832x^177+5922x^179+10968x^182+18144x^183+31080x^184+5670x^186+336x^189+270x^196+168x^203+42x^210

The gray image is a linear code over GF(7) with n=210, k=6 and d=161.
This code was found by Heurico 1.16 in 2.27 seconds.