# A112491 (b-file synthesized from sequence entry)
5 945
6 45045
7 1406790
8 37147110
9 909508600
10 21577556000
11 508072685120
12 12041790080320
13 289769457978000
14 7118294418969552
15 179128660433168160
16 4627741977903371040
17 122904955276454869056
18 3358132932795227294400