# A167199 (b-file synthesized from sequence entry)
0 1
1 -2
2 7
3 -36
4 246
5 -2100
6 21510
7 -257040
8 3510360
9 -53933040
10 920694600
11 -17288964000
12 354169292400
13 -7859862410400
14 187846741882800
15 -4810116703392000
16 131382125482608000
17 -3812816394747360000
18 117159925012065936000
19 -3800085546956707008000
20 129743036125975752480000