# A152338 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 640
7 3924
8 27552
9 197364
10 1677640
11 16002846
12 159888834
13 1733332410
14 19754032288
15 242687959560
16 3279596665638