# A122722 (b-file synthesized from sequence entry)
1 1
2 6
3 108
4 4488
5 376200
6 58652640
7 16119956160
8 7519632382080
9 5788821019685760
10 7197150396467808000
11 14206044114169232371200
12 43903287397136367836697600
13 210012592354755890839147008000
14 1540026232221309103088828327116800
15 17170286302440610680613970557956096000
16 289015112280462271460535463614055526400000