# A081529 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 3
5 12
6 10
7 60
8 105
9 280
10 252
11 2520
12 2310
13 27720
14 25740
15 24024
16 45045
17 720720
18 680680
19 12252240
20 11639628
21 11085360
22 10581480
23 232792560
24 223092870
25 1070845776
26 1029659400
27 2974571600
28 2868336900