# A280248 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 12
5 120
6 2160
7 45360
8 2903040
9 235146240
10 47029248000
11 2586608640000
12 4469659729920000
13 348633458933760000
14 307494710779576320000
15 553490479403237376000000
16 2267097003635660292096000000
17 308325192494449799725056000000