# A152368 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 720
7 4416
8 30744
9 239856
10 2139504
11 19700808
12 202858542
13 2208308468
14 25994725052
15 324119733220
16 4313917683752