# A013465 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -160
4 0
5 -691200
6 3942400
7 -14125363200
8 295206912000
9 -902471385088000
10 43911376404480000
11 -140627264197754880000
12 12856220870209699840000
13 -45500991975079280640000000