# A052744 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 6
4 48
5 840
6 17280
7 448560
8 13789440
9 491702400
10 19929369600
11 904873939200
12 45486949939200
13 2507639957222400
14 150419515915468800
15 9752720435377920000
16 679630757528346624000
17 50655177765863903232000