# A189567 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 120
6 392
7 1810
8 10400
9 72228
10 589674
11 5196870
12 52398658
13 588036216
14 7274466172
15 98024173852
16 1427556373892