# A367884 (b-file synthesized from sequence entry)
0 1
1 0
2 6
3 27
4 432
5 5670
6 107892
7 2245320
8 55380672
9 1525511232
10 47089609200
11 1600308206640
12 59508149907456
13 2400782506705440
14 104471929620067968
15 4876509369382166880
16 243046385420037166080
17 12881279635221755358720
18 723372722620484975659008