# A262206 (b-file synthesized from sequence entry)
1 2
2 24
3 2520
4 604800
5 54486432000
6 53353114214400
7 35905578804006912000
8 80018147048929689600000
9 203939450748460387344384000000
10 1441310123089178548721360295690240000000
11 9218619547278385997621820451234775040000000