# A005402 (b-file synthesized from sequence entry)
1 0
2 6
3 -12
4 -84
5 1200
6 3120
7 -249312
8 920928
9 86274816
10 -1232035584
11 -40970012160
12 1391730516480
13 20983074318336
14 -1798371774277632