# A143085 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 6
5 18
6 72
7 24
8 96
9 480
10 2880
11 120
12 600
13 3600
14 25200
15 201600
16 720
17 4320
18 30240
19 241920
20 2177280
21 21772800
22 5040
23 35280
24 282240
25 2540160
26 25401600
27 279417600
28 3353011200
29 40320
30 322560
31 2903040
32 29030400
33 319334400
34 3832012800