m

0

1

2

3

4

5

6

( m + 1 ) ( 2 m ) ! / ( m ! ) 4

1.000

4.00

4.500

2.222

0.608

0.105

0.012

m

7

8

9

10

11

12

13

( m + 1 ) ( 2 m ) ! / ( m ! ) 4

1.1 × 10−3

7.1 × 10−5

3.7 × 10−6

1.5 × 10−7

5.3 × 10−9

1.5 × 10−10

3.8 × 10−12