# A147514 (b-file synthesized from sequence entry)
3 32
4 18
5 3472
6 10993850
7 2129428800
8 546
9 5064320
10 105263157894736842
11 380
12 64609423538
13 11424
14 1673230
15 58774271029236501660840264682112
16 67650
17 122181448512
18 1666
19 586081355679130611935159482937228562988190880
20 210051282051282
21 13571630704729343835960800