# A255163 (b-file synthesized from sequence entry)
0 1
1 2
2 -12
3 168
4 -2160
5 27936
6 -361152
7 4669056
8 -60362496
9 780378624
10 -10088893440
11 130431264768
12 -1686241898496
13 21800077959168
14 -281835838291968
15 3643630995013632
16 -47105601999667200
17 608990795936169984
18 -7873156775230046208