# A196870 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 36
5 360
6 6120
7 171360
8 7882560
9 591192000
10 72125424000
11 14280833952000
12 4584147698592000
13 2383756803267840000
14 2007123228351521280000
15 2735708960243123504640000
16 6034973966296330451235840000
17 21544857059677899710911948800000