# A013173 (b-file synthesized from sequence entry)
0 2
1 -12
2 488
3 -48608
4 9080960
5 -2722798848
6 1197871592448
7 -726520846829568
8 581088281306562560
9 -592572418222512668672
10 750419972539476482195456
11 -1155381150026866713259671552
12 2125413346746653166067846742016