# A012405 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 12
5 -60
6 90
7 -420
8 15008
9 -149184
10 572040
11 -4263600
12 153746472
13 -2274880608
14 14574976416
15 -151922927520
16 6077379610368
17 -119360435727744
18 1090133783570880
19 -14675613664063104