# A156926 (b-file synthesized from sequence entry)
0 1
1 2
2 -8
3 -96
4 4608
5 1105920
6 -1592524800
7 -16052649984000
8 1294485694709760000
9 939485937792555417600000
10 -6818413142123250198773760000000
11 -544338467423010707068824846336000000000
12 521477993674340011006196823029396275200000000000