The generator matrix 1 0 0 1 1 1 1 1 1 1 1 1 1 1 2a^2+2 1 1 1 1 1 1 1 1 2a^2 1 1 2a^2+2a 1 1 1 1 1 1 2 1 1 1 1 1 1 0 1 0 1 a a^2 3a+3 2a^2+2 3 3a^2+3a+2 a^2+3a 3a^2+2 2 a+2 1 2a^2+3 2a^2+a+2 3a^2+2a 3a^2+a+2 a^2+3a+3 2a^2 2a^2+a a^2+1 1 a^2+3a+2 2a+1 1 3a^2+3 3 2a^2 2a^2+3a+1 2 2a^2+3a 1 a^2+a 3a^2+3a+2 2a^2+2a+3 3a^2+3a+1 a^2+2a+3 a+1 0 0 1 a^2+2a+1 a 3a^2+3a+2 1 3 a^2+3a a^2+2a+3 2 a+2 3a+3 a+1 3 3a 3a^2 2a^2+3a+3 3a^2+a 2a^2 a^2+3 2a+3 3a^2+a+1 a a^2+2a+2 2a a^2+3a a^2 2a^2+3 2a^2+3a+2 3a^2+2 a+3 2a^2+a+1 3a^2+2a+2 3a^2+2a 2a^2+2a a^2+2a+2 a^2+3a+2 2a^2+2 3a+1 generates a code of length 40 over GR(64,4) who´s minimum homogenous weight is 263. Homogenous weight enumerator: w(x)=1x^0+2968x^263+140x^264+448x^266+1344x^267+3976x^268+8176x^269+7280x^270+15120x^271+63x^272+6272x^274+9408x^275+13552x^276+17248x^277+9632x^278+23576x^279+105x^280+21952x^282+21504x^283+25480x^284+28336x^285+15344x^286+30016x^287+84x^288+63x^296+56x^304 The gray image is a code over GF(8) with n=320, k=6 and d=263. This code was found by Heurico 1.16 in 8.61 seconds.