# A154882 (b-file synthesized from sequence entry)
1 2
2 4
3 12
4 120
5 7560
6 8648640
7 1927522396800
8 4747472432036420486400
9 128438082648984172330026178330296384000
10 6184173455628205993842062057864303743050691444602955105860128640000