# A077540 (b-file synthesized from sequence entry)
1 2
2 120
3 5040
4 5765760
5 39070080
6 5967561600
7 66902793897139200
8 14792260407724800
9 106137499051584000
10 195333707771834926694400
11 131478134374795266938880000
12 912197279957973412118937661440000