1,6,20,56,144,()
A.256 B.244 C.352 D.384
9,16,36,100,()。 A.144 B.256C.324D.361
20/9,4/3,7/9,4/9,1/4,() A.5/36 B.1/6 C.1/9 D.1/144
1,4,9,36,144,()。 A.196 B.256 C.366 D.576
1,6,20,56,144,() A.384B.352 C.312D.256
4,10,28,82,() A.128B.144C.244D.260
1 6 20 56 144 ( )A.256 B.244 C.352 D.384