# A254881 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 1
4 0
5 2
6 5
7 4
8 1
9 0
10 12
11 40
12 51
13 31
14 9
15 1
16 0
17 144
18 564
19 904
20 769
21 376
22 106
23 16
24 1
25 0
26 2880
27 12576
28 23300
29 24080
30 15345
31 6273
32 1650
33 270
34 25
35 1
36 0
37 86400
38 408960
39 840216
40 991276
41 748530
42 381065
43 133848
44 32523
45 5370
46 575
47 36
48 1
49 0
50 3628800
51 18299520