# A013096 (b-file synthesized from sequence entry)
0 1
1 -4
2 8
3 -214
4 8632
5 -381754
6 56522540
7 -6087452310
8 1458087413200
9 -333863833250482
10 114840891055289940
11 -44663949601714088046
12 21870152705694370672888
13 -12543311598815172475041226