# A012056 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 216
4 -1280
5 -1141504
6 -263392128
7 -64804059904
8 -18858549039104
9 -6592583427379200
10 -2757743938862710784
11 -1367930584522073079808
12 -796483574916192660455424
13 -539009967859883250211815424