# A255505 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 1
4 -1
5 1
6 -691
7 1
8 -3617
9 43867
10 -174611
11 77683
12 -236364091
13 657931
14 -3392780147
15 1723168255201
16 -7709321041217
17 151628697551
18 -26315271553053477373
19 154210205991661
20 -261082718496449122051
21 1520097643918070802691