k[1] = 1
k[2] = 1/10
k[3] = 1/10
k[4] = 1
k[5] = 1/10
k[6] = 1
k[7] = 1/10
k[8] = 1
k[9] = 1/10
k[10] = 1/10
k[11] = 0
k[12] = 1/1000000000000
k[13] = 1
k[14] = 9963234242563/4000000000000
k[15] = 41513476010679/25000000000000