# A282466 (b-file synthesized from sequence entry)
0 5
1 6
2 14
3 48
4 216
5 1200
6 7920
7 60480
8 524160
9 5080320
10 54432000
11 638668800
12 8143027200
13 112086374400
14 1656387532800
15 26153487360000
16 439378587648000
17 7825123418112000
18 147254595231744000
19 2919482409811968000
20 60822550204416000000
21 1328364496464445440000