# A024300 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 -16
4 -320
5 512
6 330752
7 12652544
8 -474349568
9 -108303286272
10 -5003002773504
11 1006927880388608
12 231200342870589440
13 5316662410642194432
14 -8274789542105574277120
15 -1938943461906570522132480