# A114450 (b-file synthesized from sequence entry)
0 0
1 1
2 10
3 252
4 12176
5 966240
6 114341760
7 18897709824
8 4160840140800
9 1177736213606400
10 416807049369600000
11 180368555623280640000
12 93711488655948742656000
13 57572391079539343687680000