# A191471 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 -3
4 4
5 -30
6 162
7 -252
8 400
9 -27912
10 200744
11 705672
12 -4202296
13 -223340208
14 1418238416
15 29398266888
16 -114981277184
17 -8193860510784
18 30889433635776
19 2261786651427072
20 -3830504174333824