|
例子
|
a(2)=2到a(6)=12对:
(1,2) (1,2) (1,2) (1,2) (1,2) (1,2)
(2,1) (2,1) (1,4) (1,4) (1,4) (1,4)
(2,1) (2,1) (1,6) (1,6)
(2,4) (2,4) (2,1) (2,1)
(3,4) (2,5) (2,4) (2,4)
(4,1) (3,4) (2,5) (2,5)
(4,2) (4,1) (3,4) (3,4)
(4,3)(4,2)(4,1)(4,1)
(4,3)(4,2)(4,2)
(5,2) (4,3) (4,3)
(5,2) (5,2)
(6,1) (6,1)
|