# A349730 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 16
4 66
5 284
6 1296
7 6432
8 35862
9 231652
10 1760232
11 15629648
12 158866436
13 1807908216
14 22636353856
15 308050239360
16 4517683948830
17 70949359114740
18 1187285196326520
19 21083306170356720
20 395875848847690140
21 7835534053016676360
22 163032210287312821920