# A012932 (b-file synthesized from sequence entry)
0 0
1 2
2 -1
3 20
4 -54
5 1188
6 -7590
7 181632
8 -2019080
9 53249472
10 -874603440
11 25606617472
12 -562552304160
13 18326040005024
14 -504598523011856
15 18267771678474112
16 -603047158364227200
17 24178616400492978432
18 -927480579061871147904
19 40990916944151608195584