# A261341 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 6
5 12
6 30
7 36
8 42
9 72
10 240
11 420
12 600
13 900
14 1560
15 1764
16 3600
17 6084
18 8100
19 46440
20 1742400
21 4062240
22 35814240