# A052730 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 6
4 72
5 1440
6 35280
7 1058400
8 37376640
9 1520830080
10 70053984000
11 3603888288000
12 204806714112000
13 12742502111539200
14 861483843034214400
15 62887137880799232000
16 4929809613351727104000
17 413044721987184967680000