# A012681 (b-file synthesized from sequence entry)
0 1
1 0
2 -12
3 480
4 -25200
5 1789440
6 -165502656
7 18976409088
8 -2521802100480
9 337469315481600
10 -20084172331338752
11 -21802197506685280256
12 22192552544232587431936
13 -18125174754251391091998720