# A327023 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 20
4 1
5 168
6 1680
7 1
8 440
9 924
10 55440
11 369600
12 1
13 910
14 10010
15 300300
16 1261260
17 33633600
18 168168000
19 1
20 1632
21 37128
22 48620
23 1113840
24 24504480
25 17153136
26 326726400
27 2058376320
28 34306272000
29 137225088000