# A241122 (b-file synthesized from sequence entry)
1 2
2 8
3 48
4 384
5 3840
6 46080
7 645120
8 10321920
9 2786918400
10 2229534720
11 735746457600
12 5885971660800
13 765176315904000
14 192824431607808000
15 385648863215616000
16 12340763622899712000
17 18881368343036559360000
18 15105094674429247488000