# A012180 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 48
4 -29696
5 -6049792
6 -1262426112
7 -308569372672
8 -89297625350144
9 -30123113337716736
10 -11520007513318621184
11 -4775431672418431664128
12 -1952929261585732032528384
13 -545214673336986589066166272