# A013043 (b-file synthesized from sequence entry)
0 1
1 -4
2 64
3 -2464
4 176000
5 -20274304
6 3418964992
7 -795860555520
8 244118384340992
9 -95517422279237632
10 46396805200416325632
11 -27406009571869059219456
12 19339103621838228194852864