# A013487 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 -560
5 50400
6 -4403520
7 451651200
8 -55603258880
9 8098495142400
10 -1364657183216640
11 258905686980864000
12 -53203592135631564800
13 11000355030582368256000
14 -1812425415209721012879360