# A189425 (b-file synthesized from sequence entry)
0 1
1 1
2 -2
3 0
4 14
5 -70
6 232
7 -308
8 -4044
9 58788
10 -574392
11 4926768
12 -38678088
13 265429320
14 -1203040512
15 -6939932400
16 339735301008
17 -7509538816752
18 140461600744032
19 -2473675024255104
20 42534077510399712