The generator matrix 1 0 0 0 1 1 1 X^2 0 1 1 X 1 0 1 0 X 1 X^2+X 0 X 1 1 1 X^2+X 1 X^2 1 X X 1 1 1 1 X^2+X X 1 X^2 1 1 X^2 1 1 1 0 X 1 X^2+X 1 X^2 1 X^2 1 X^2+X 0 1 1 1 X X^2+X 1 1 X^2+X 0 1 1 X^2 X^2+X 1 1 1 0 1 0 0 1 X^2 1 0 1 0 X+1 1 X+1 1 X X^2 1 X 1 1 X X 0 X^2+1 0 X^2+X 1 X 1 X X+1 X^2+X X^2+1 X^2+X+1 1 X^2+X X^2 X^2+X X^2+1 X X^2+X X^2+X+1 X^2+1 0 1 X^2 X^2+1 X^2 X+1 0 X^2+X X^2+X X X 1 X^2+1 X^2+X X+1 1 1 X^2+X+1 X^2 X^2+X 1 X+1 X^2+1 X^2 X^2 X^2+X X^2+X+1 X^2 0 0 1 0 X 0 X^2+X 1 X X^2+1 X^2+X+1 X^2+1 1 X^2+1 X+1 X^2+X X^2 0 X^2+X 1 1 X^2 1 X 1 X^2+X+1 0 X^2+1 1 0 X^2+1 X^2 X^2+1 X 0 1 X^2+X 1 X^2 X^2+1 1 X 1 0 X^2+X+1 1 X+1 1 X^2 1 X^2+1 X 1 1 0 X X^2+X X^2+1 X^2+1 X^2 0 X^2+X 1 X+1 X 1 X^2+X 1 X^2+X 0 0 0 0 0 1 X 1 X+1 1 X+1 X^2 X^2+X X^2 X^2+1 1 X+1 1 X X^2+1 X^2+1 X^2+X+1 0 X X 1 X^2+X+1 X^2+X X X^2+X+1 X^2+X 1 X^2+X X^2+X+1 1 1 1 X+1 X^2 X X^2+X 0 X^2+X+1 X^2+X+1 X+1 X^2+X+1 X^2+X+1 X^2+1 X^2+X+1 0 X X^2+X X+1 1 1 X^2+X X^2+1 X^2+X X^2 0 X^2+1 1 X^2+X X^2+X+1 X^2+1 1 X^2 X^2 1 X+1 X X^2+1 X^2 0 0 0 0 X^2 0 X^2 0 X^2 0 X^2 X^2 X^2 X^2 0 0 X^2 0 X^2 X^2 0 0 0 X^2 0 0 X^2 0 0 X^2 0 X^2 0 0 0 X^2 X^2 X^2 0 X^2 0 0 0 X^2 0 X^2 0 X^2 X^2 X^2 X^2 X^2 0 0 X^2 0 X^2 0 0 X^2 0 0 X^2 0 X^2 0 X^2 X^2 X^2 X^2 0 generates a code of length 71 over Z2[X]/(X^3) who´s minimum homogenous weight is 64. Homogenous weight enumerator: w(x)=1x^0+259x^64+348x^65+674x^66+468x^67+865x^68+536x^69+1004x^70+552x^71+715x^72+456x^73+678x^74+308x^75+495x^76+248x^77+220x^78+96x^79+137x^80+44x^81+44x^82+16x^83+24x^84+4x^86 The gray image is a linear code over GF(2) with n=284, k=13 and d=128. This code was found by Heurico 1.11 in 1.2 seconds.