# A376351 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6
4 0
5 60
6 2520
7 840
8 181440
9 6063120
10 11642400
11 1437337440
12 44626982400
13 254278664640
14 24575197046400
15 756010400745600
16 9284429893939200
17 784770965801222400
18 25067890370095372800
19 541810656586725926400
20 42351473267452597248000
21 1461224653966598493772800
22 48020130717168717960652800