# A350975 (b-file synthesized from sequence entry)
8 272
9 7936
10 176896
11 3610112
12 71867136
13 1436058624
14 29228559360
15 610801551360
16 13163645214720
17 293282162933760
18 6763255299440640
19 161506934017228800
20 3993863950953676800
21 102243157431032217600
22 2708346162794220748800
23 74189360770448110387200
24 2100168597930370007040000