# A012652 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 -3
4 0
5 -10
6 400
7 -3276
8 12768
9 -72864
10 1933888
11 -32108560
12 322393280
13 -3122225184
14 60417280768
15 -1349906937120
16 23068109840384
17 -351887538631168
18 6985288388898816
19 -174933529672527360