# A182661 (b-file synthesized from sequence entry)
3 2
4 0
5 20
6 80
7 630
8 4928
9 44520
10 444960
11 4894890
12 58738240
13 763597692
14 10690366960
15 160355505310
16 2565688083840
17 43616697426640
18 785100553677888
19 14916910519881810
20 298338210397633920
21 6265102418350314980
22 137832253203706926480