# A013341 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 -3
4 9
5 -53
6 315
7 -2149
8 17409
9 -156617
10 1563219
11 -17208081
12 206502945
13 -2684228909
14 37580441899
15 -563709546373
16 9019300106369
17 -153328265590929
18 2759909907247651
19 -52438275521652889
20 1048765530491448353
21 -22024076635965333173
22 484529682070755145979