# A357664 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 6
4 32
5 220
6 1592
7 11944
8 96000
9 847120
10 8209952
11 86020704
12 958326272
13 11243157952
14 138464594816
15 1789358629504
16 24250275913728
17 344002396594432
18 5092763802452480
19 78443316497892864
20 1253887341918199808
21 20761127890765634560