# A367678 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 21
5 672
6 18144
7 32659200
8 204120000
9 12243879648000
10 550274933894400000
11 5577105239386480800000
12 870028417344291004800000
13 51097100257451535417918627840000
14 292528465778659685432564243496960000000