# A329496 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 3
5 8
6 60
7 240
8 2520
9 40320
10 181440
11 725760
12 266112
13 95800320
14 17791488
15 1585059840
16 130767436800
17 1394852659200
18 35568742809600
19 20324995891200
20 12164510040883200
21 69511485947904000
22 5109094217170944000
23 32114306507931648000