# A012450 (b-file synthesized from sequence entry)
1 2
2 0
3 40
4 -2688
5 210208
6 -13038080
7 2241915520
8 -589026013184
9 146361182839296
10 -42690102749216768
11 18963982821764573184
12 -10109322351828827471872
13 5702647873782168851521536