# A293590 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6
4 -24
5 0
6 360
7 0
8 -20160
9 60480
10 1814400
11 -19958400
12 -59875200
13 2075673600
14 21794572800
15 -860885625600
16 3487131648000
17 148203095040000
18 -524638956441600
19 -71973351075225600
20 942749528168448000
21 19878836825143296000
22 -437111394135736320000