# A324131 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 116
6 657
7 4260
8 31144
9 253400
10 2271250
11 22234380
12 236042879
13 2700973070
14 33139335352
15 433996381926
16 6042468288640
17 89124117755852
18 1388234052651161
19 22771513253008320
20 392354340340237176
21 7084700602143004688
22 133785708212530414358
23 2636998678988431607188