# A012037 (b-file synthesized from sequence entry)
0 1
1 -4
2 84
3 -4320
4 410640
5 -62424000
6 13882209600
7 -4250758886400
8 1715097849504000
9 -881945575315584000
10 563062441711086720000
11 -436991853893041873920000
12 405186856780938968885760000