k[1] = 500
k[2] = 139
k[3] = 17/100
k[4] = 251/10000
k[5] = 423/1000
k[6] = 21/40
k[7] = 1/100
k[8] = 23/20
k[9] = 81/20
k[10] = 837806529940613/1523109748630000
k[11] = 1