# A012807 (b-file synthesized from sequence entry)
0 1
1 2
2 40
3 576
4 46208
5 1293184
6 309637120
7 5786437632
8 7315622592512
9 -347058934743040
10 483735262691819520
11 -91992936989187702784
12 74923051609806418739200
13 -28841683494637052911157248