# A141618 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 1
5 9
6 6
7 1
8 28
9 72
10 24
11 1
12 75
13 500
14 600
15 120
16 1
17 186
18 2700
19 7800
20 5400
21 720
22 1
23 441
24 12642
25 73500
26 117600
27 52920
28 5040
29 1
30 1016
31 54096
32 571536
33 1764000
34 1787520
35 564480
36 40320
37 1
38 2295
39 217800
40 3916080
41 21019824
42 40007520
43 27941760
44 6531840
45 362880
46 1
47 5110
48 839700
49 24555600
50 214326000