The generator matrix 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 2 2 2 2 2 2 2 1 1 4 2 1 1 2 2 1 1 1 1 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 0 8 8 8 8 8 8 8 0 8 8 8 0 8 0 0 0 8 0 0 0 0 0 8 8 8 0 0 0 8 8 8 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 8 8 8 8 8 8 8 0 0 0 0 0 8 0 8 8 0 8 8 8 0 0 8 8 8 0 8 0 0 8 8 8 0 8 8 8 8 0 0 8 8 0 8 8 0 8 8 8 0 8 8 0 0 8 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 8 8 8 8 8 8 8 0 0 0 8 0 8 8 8 0 8 8 0 0 8 8 0 8 8 8 0 0 8 0 0 0 0 0 8 8 8 8 0 0 8 8 8 8 0 8 0 0 0 8 0 8 8 0 8 0 8 8 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 8 0 0 0 8 8 8 8 8 8 0 0 0 0 8 0 8 8 0 0 8 0 8 8 8 8 8 0 0 0 8 0 8 0 0 0 8 8 0 8 8 0 0 8 0 0 0 0 8 0 0 0 8 0 8 0 0 8 0 8 0 8 8 0 8 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 8 0 8 8 8 8 8 8 0 8 8 0 8 8 8 0 0 0 8 8 8 8 0 8 8 0 8 0 0 0 0 8 0 0 0 0 8 0 8 0 8 0 8 0 8 0 0 8 0 0 8 0 8 8 8 8 8 8 8 0 8 0 0 0 0 8 8 0 0 0 0 0 0 8 0 0 0 0 0 0 8 0 0 8 8 0 8 8 0 8 0 8 0 8 8 8 8 0 0 0 8 0 8 0 0 8 8 0 0 8 0 0 8 8 8 8 8 8 8 0 8 8 0 8 0 8 8 8 8 8 8 0 8 8 8 0 8 8 0 8 0 0 8 0 8 8 8 8 0 0 0 0 0 0 0 8 0 0 0 0 0 8 0 0 0 8 8 8 8 0 8 8 0 8 0 8 0 0 8 0 0 0 0 8 0 8 8 0 8 8 8 0 0 8 8 0 8 0 0 0 0 0 8 0 8 8 0 8 8 8 0 8 8 0 0 8 0 0 8 0 0 8 8 0 8 8 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 8 0 0 0 0 8 8 0 8 0 0 0 8 8 8 0 0 8 0 8 8 0 8 8 0 0 0 8 8 8 8 0 0 8 8 8 8 8 0 0 8 8 0 0 0 0 8 0 0 8 0 8 0 0 8 0 0 8 0 8 8 8 8 8 8 8 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 8 0 0 0 8 0 0 8 0 8 0 0 8 0 0 0 0 8 8 8 0 0 8 8 0 0 8 8 8 8 0 8 8 0 0 8 8 0 0 0 0 0 8 8 0 8 0 8 0 8 0 8 0 0 0 0 8 0 8 8 0 8 8 8 8 0 0 8 8 0 0 0 0 0 0 0 0 0 0 8 0 8 8 8 8 8 0 0 0 8 0 0 8 8 0 0 8 0 8 8 0 0 8 8 0 0 0 8 0 8 8 0 0 0 8 8 8 0 0 0 8 0 0 8 0 8 0 8 0 8 0 0 8 0 0 8 0 8 8 0 0 8 8 0 8 8 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8 8 8 8 0 0 8 8 8 8 8 0 8 0 8 0 0 0 0 0 8 8 8 8 8 0 0 8 0 8 0 0 0 0 0 8 8 8 8 8 0 0 8 0 8 8 0 0 0 0 0 8 0 8 8 8 8 0 0 8 0 8 8 8 0 0 0 8 8 generates a code of length 81 over Z16 who´s minimum homogenous weight is 64. Homogenous weight enumerator: w(x)=1x^0+140x^64+389x^68+10x^70+535x^72+126x^74+949x^76+676x^78+5512x^80+16384x^81+4924x^82+1300x^84+370x^86+664x^88+38x^90+450x^92+207x^96+75x^100+12x^104+5x^108+1x^136 The gray image is a code over GF(2) with n=648, k=15 and d=256. This code was found by Heurico 1.16 in 45.8 seconds.