# A012431 (b-file synthesized from sequence entry)
0 1
1 0
2 -12
3 360
4 -7280
5 -383040
6 89394624
7 -8970625664
8 -316692862720
9 470941672802304
10 -146844936720038912
11 18279034160407939072
12 9932590980055055503360
13 -8395139128320596309032960