# A009348 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 5
4 -18
5 121
6 -792
7 7013
8 -66640
9 752785
10 -9320704
11 129763589
12 -1972346112
13 32812992265
14 -590188526592
15 11441858264741
16 -237543276488704
17 5261501926546081
18 -123809000924250112
19 3084889329990554117