# A220271 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 3
5 12
6 5
7 360
8 105
9 280
10 63
11 151200
12 385
13 9979200
14 6435
15 112112
16 675675
17 54486432000
18 85085
19 5557616064000
20 2909907
21 369512000
22 416645775
23 487847538097920000
24 37182145
25 8976394701001728
26 40542838875
27 2382036937280000
28 10756263375