# A357831 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 2
4 12
5 70
6 454
7 3332
8 27552
9 254400
10 2598852
11 29125932
12 355455468
13 4693396656
14 66671326176
15 1013916648840
16 16436063079552
17 282920894841096
18 5153797995148296
19 99052313167391760
20 2003040751641857856
21 42513854724369719136
22 944959706480298199824