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 2 2 1 1 1 2 2 1 1 1 1 2 1 1 1 4 1 2 0 1 4 1 2 2 0 1 4 1 2 2 1 1 0 1 1 2 1 1 4 1 1 1 2 1 4 1 1 1 2 2 2 1 1 1 0 12 0 12 0 12 0 12 0 12 0 4 12 8 0 12 4 0 8 12 4 0 12 8 12 0 12 12 12 0 4 12 12 0 8 12 0 12 8 8 12 12 4 12 4 8 12 8 12 12 4 12 12 4 12 12 0 12 4 0 12 0 8 0 12 12 0 4 4 4 0 12 8 12 12 12 12 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 8 8 0 0 0 0 0 0 8 0 8 8 0 0 0 0 8 8 8 8 8 0 8 8 0 8 8 0 0 8 8 0 0 8 0 0 8 8 0 8 0 8 0 8 8 8 0 8 8 0 8 8 0 0 0 0 8 0 0 8 8 8 0 8 0 0 0 0 0 0 8 0 0 0 0 0 0 0 8 8 0 0 0 8 0 0 0 8 8 8 8 8 8 0 8 8 8 0 0 8 8 8 8 0 0 0 0 8 8 0 0 8 8 8 8 0 0 0 8 8 8 8 8 8 8 8 0 0 0 0 0 8 0 0 8 0 0 8 8 0 0 0 0 8 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 8 0 8 8 8 0 0 0 8 8 0 8 8 8 8 8 8 8 0 0 0 8 0 0 8 0 8 0 8 8 8 0 8 0 8 8 8 0 8 0 8 0 0 8 8 0 8 0 0 0 0 8 0 8 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 8 0 0 0 8 8 8 0 0 8 0 8 0 0 8 0 8 0 8 8 0 8 0 0 8 0 8 0 8 8 8 8 8 0 8 8 8 0 8 0 8 0 8 0 0 0 0 0 0 8 8 8 0 8 8 0 8 0 0 0 8 0 8 8 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 8 8 8 8 8 8 0 8 8 8 8 8 8 0 8 0 0 8 0 8 0 8 0 0 0 8 0 8 8 8 0 0 8 0 0 0 0 8 0 8 8 0 8 0 8 8 8 0 0 0 8 0 0 0 8 8 8 8 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 0 8 0 0 8 0 8 8 8 0 0 8 0 8 0 8 0 0 8 8 8 0 0 8 8 0 8 8 8 0 8 8 0 0 0 0 0 8 8 8 8 0 8 8 0 0 8 0 0 0 8 0 8 0 0 0 0 8 8 0 0 0 0 0 0 0 8 8 0 0 0 0 0 0 0 0 0 8 0 0 0 0 0 8 0 0 8 0 8 8 8 8 0 8 8 0 0 0 0 8 0 8 8 8 0 8 8 0 8 0 0 8 0 0 8 0 8 0 0 8 8 8 0 8 0 0 8 0 8 8 0 8 8 0 8 8 0 0 8 8 0 8 8 0 8 8 0 0 0 0 0 0 0 0 0 0 0 0 8 0 8 8 0 0 8 8 0 0 8 0 8 8 8 0 8 0 0 0 0 0 8 8 0 8 0 0 0 0 8 8 0 8 8 0 0 8 0 0 8 8 0 0 8 0 8 8 8 8 8 8 8 0 0 0 0 8 8 0 0 0 8 8 0 8 8 0 8 8 0 0 0 0 0 0 0 0 0 0 0 8 0 0 8 8 8 8 8 8 0 8 0 8 8 0 0 0 8 0 0 0 0 0 0 0 8 8 0 8 0 0 8 8 8 0 8 0 0 8 8 0 0 0 0 8 8 0 8 0 8 0 8 0 8 8 0 8 0 0 8 8 8 8 0 0 8 8 0 0 0 generates a code of length 80 over Z16 who´s minimum homogenous weight is 64. Homogenous weight enumerator: w(x)=1x^0+67x^64+56x^66+26x^67+176x^68+128x^69+180x^70+158x^71+335x^72+394x^73+467x^74+812x^75+1327x^76+2170x^77+3337x^78+4512x^79+4603x^80+4468x^81+3320x^82+2210x^83+1276x^84+804x^85+459x^86+382x^87+263x^88+194x^89+211x^90+88x^91+92x^92+34x^93+103x^94+4x^95+41x^96+39x^98+8x^100+17x^102+2x^104+2x^106+1x^108+1x^114 The gray image is a code over GF(2) with n=640, k=15 and d=256. This code was found by Heurico 1.16 in 39.4 seconds.