# A003193 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 -2
5 0
6 0
7 -16
8 18
9 0
10 -168
11 384
12 -314
13 -1632
14 6264
15 -9744
16 -10014
17 86976
18 -205344
19 80176
20 1009338
21 -3579568
22 4575296
23 8301024
24 -54012882
25 112640896
26 -5164464
27 -694845120
28 2160781086