# A233044 (b-file synthesized from sequence entry)
1 1
2 1
3 5
4 2
5 65
6 24
7 163
8 60
9 1957
10 720
11 685
12 252
13 109601
14 40320
15 98641
16 36288
17 9864101
18 3628800
19 13563139
20 4989600
21 260412269
22 95800320
23 8463398743
24 3113510400
25 47395032961
26 17435658240
27 888656868019
28 326918592000