# A012191 (b-file synthesized from sequence entry)
0 1
1 -1
2 9
3 -393
4 25329
5 -2720433
6 438412857
7 -97949820153
8 29044709480289
9 -11037393803823585
10 5229024617702601705
11 -3021459365652314206953
12 2091487425283069032286545
13 -1708553607407338796161442193