# A180623 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 30
6 320
7 5400
8 119040
9 3432240
10 125927424
11 5594520960
12 302070988800
13 19179742982400
14 1423835230371840
15 121909715166919680
16 11901225092146790400
17 1316846634449778432000
18 163453208505912970444800