# A369791 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 8
5 22
6 70
7 262
8 1088
9 5076
10 26490
11 146542
12 896402
13 5662622
14 39826304
15 279072864
16 2232912264
17 17866212198
18 153323343990
19 1379920982310
20 13115759159982
21 131158174385100