# A075179 (b-file synthesized from sequence entry)
0 1
1 6
2 6
3 60
4 10
5 252
6 84
7 360
8 90
9 660
10 44
11 32760
12 5460
13 2520
14 360
15 12240
16 34
17 14364
18 1596
19 19800
20 13860
21 91080
22 920
23 982800
24 81900
25 19656
26 1512
27 48720
28 1160
29 1718640
30 114576
31 1884960
32 117810
33 21420
34 140
35 69090840
36 109668
37 17784
38 936
39 1623600
40 9020