# A065412 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 1
5 20
6 480
7 10560
8 272640
9 8709120
10 280627200
11 10644480000
12 439404134400
13 18781972070400
14 873535419187200
15 45751167221760000
16 2665172872986624000
17 160281737951182848000
18 10593163661832880128000