The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1  a a^6*X+a^2 a^3 a^6*X+a^4  a a^5  0 a^6*X+1 a^3 a^6*X+1 X+a X+a^3  X X+a X+a^3  X a^3*X+1 a^5 X+a^5 X+a^5
 0  0 a^6*X a*X  X  0 a^5*X a^3*X a*X a^3*X a^5*X a^6*X a^2*X  X a^4*X a^5*X a^4*X a^3*X a^2*X  0  X a^4*X a^6*X

generates a code of length 23 over F8[X]/(X^2) who´s minimum homogenous weight is 149.

Homogenous weight enumerator: w(x)=1x^0+1680x^149+217x^152+1344x^154+5600x^157+140x^160+3584x^161+9408x^162+10640x^165+49x^168+63x^176+42x^184

The gray image is a linear code over GF(8) with n=184, k=5 and d=149.
This code was found by Heurico 1.16 in 2.77 seconds.