# A056592 (b-file synthesized from sequence entry)
0 1
1 0
2 -2
3 -6
4 -14
5 0
6 278
7 2520
8 15016
9 0
10 -2172632
11 -53222400
12 -835765304
13 0
14 851104689248
15 55249242048000
16 2288258540319136
17 0
18 -16212819419809777952
19 -2773508758631170560000
20 -302332135138133434911104
21 0
22 14824259801049378686209605248