# A355605 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 3
4 -6
5 20
6 0
7 -126
8 1260
9 -4320
10 5040
11 180180
12 -2601720
13 31309200
14 -372756384
15 4877195400
16 -70178799600
17 1099333347840
18 -18429818232960
19 327676010785200
20 -6146676161388000
21 121301442091851840
22 -2512746856371628800
23 54527094987619716000