k1 = 1;
k2 = 11/20;
k3 = 6/5;
k4 = 2/625;
k5 = 19/5000;
k6 = 7/4;
k7 = 3/2000;
k8 = 17/10000;
k9 = 143/100;
k10 = 3/2000;
k11 = 3/20;
k12 = 59/25;
k13 = 49/10;
k14 = 23/20;
k15 = 1/10;
k16 = 1/4;