# A089709 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 36
5 360
6 6480
7 220320
8 14541120
9 1890345600
10 487709164800
11 250682510707200
12 257200255985587200
13 527260524770453760000
14 2160713630509319508480000
15 17704887488393364052485120000