# A330512 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 24
5 129
6 600
7 4815
8 40320
9 313425
10 3900960
11 39023775
12 399168000
13 6335076825
14 83286403200
15 1169542749375
16 20922789888000
17 359796258446625
18 5529827983680000
19 120457648437501375
20 2615369658789888000
21 40723609672075955625