# A354316 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 9
4 96
5 1170
6 18324
7 340200
8 7360128
9 181476288
10 5024611440
11 154319988240
12 5206240427904
13 191372822989920
14 7612497915813504
15 325791049256094240
16 14925809593280332800
17 728828735500650355200
18 37786217117138333005824