# A009658 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 -120
4 -12160
5 -750080
6 -36334464
7 147613952
8 499312189440
9 118002014031872
10 18886517107687424
11 1095225249188249600
12 -831828929736605794304
13 -517984611085464701173760