# A330074 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 14
4 78
5 544
6 4560
7 42468
8 451584
9 5382144
10 69737760
11 985265280
12 15204119040
13 249602065920
14 4398839827200
15 82834744849920
16 1646970433920000
17 34626184595251200
18 769149445849989120
19 17896198498368583680
20 437123791096022016000
21 11171177571932111462400