# A143493 (b-file synthesized from sequence entry)
4 1
5 4
6 1
7 20
8 9
9 1
10 120
11 74
12 15
13 1
14 840
15 638
16 179
17 22
18 1
19 6720
20 5944
21 2070
22 355
23 30
24 1
25 60480
26 60216
27 24574
28 5265
29 625
30 39
31 1
32 604800
33 662640
34 305956
35 77224
36 11515
37 1015
38 49
39 1
40 6652800
41 7893840
42 4028156
43 1155420
44 203889
45 22680
46 1554
47 60
48 1
49 79833600