# A069491 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 12
5 10
6 60
7 420
8 840
9 252
10 2520
11 2310
12 27720
13 1716
14 24024
15 360360
16 720720
17 680680
18 12252240
19 25194
20 503880
21 10581480
22 232792560
23 223092870
24 5354228880
25 1029659400
26 26771144400
27 2868336900
28 80313433200
29 77636318760