# A111829 (b-file synthesized from sequence entry)
0 0
1 1
2 -4
3 42
4 7296
5 -7931976
6 -45557382240
7 3064554175021200
8 801993619807364206080
9 -2618439032548254776387771520
10 -30580166025709706974876961026475520
11 4440597519115996836838709580481861376121600