# A067678 (b-file synthesized from sequence entry)
1 2
2 8
3 12
4 600
5 5082
6 13680
7 17160
8 25920
9 265200
10 1256640
11 3591600
12 23919840
13 42923520
14 351195264
15 1642291200
16 12572386944
17 15043279104