# A013137 (b-file synthesized from sequence entry)
0 2
1 -16
2 800
3 -97536
4 22208000
5 -8125689856
6 4360566579200
7 -3226435003416576
8 3148058338141798400
9 -3916271639106285469696
10 6050134274987713730969600
11 -11363591103950667093393801216