# A012565 (b-file synthesized from sequence entry)
0 1
1 0
2 -12
3 120
4 1680
5 -4800
6 -20091456
7 2552065152
8 -264925689600
9 68708953577472
10 -29508519541947392
11 12189637912025356288
12 -5505843502429896863744
13 3137663619884947867484160