# A012216 (b-file synthesized from sequence entry)
0 1
1 -2
2 24
3 -664
4 28416
5 -942336
6 -260697984
7 165900454656
8 -85943912448000
9 48584004553543680
10 -31574321393019125760
11 23832746038658540666880
12 -20858343927838973179822080
13 21048655959583804491297914880