k[1] = 1 k[2] = 1/5 k[3] = 1/10 k[4] = 1/10 k[5] = 1/10 k[6] = 1/10 k[7] = 1/10 k[8] = 1/10 k[9] = 1/10 k[10] = 1/20 k[11] = 128519789138443/50000000000000 k[12] = 31/25 k[13] = 1/10 k[14] = 1