# A354231 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6
4 -36
5 210
6 -990
7 2184
8 37128
9 -863736
10 13020480
11 -168384744
12 1940801544
13 -18825129648
14 107706637584
15 1386022834944
16 -73429347222720
17 2034345021802560
18 -46869707752067520
19 976421492688165120
20 -18675350766042871680
21 319467427583225518080