# A012583 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 -12
5 60
6 -210
7 1260
8 -4368
9 -42336
10 833880
11 -9944880
12 109031208
13 -998835552
14 5256888000
15 57628902240
16 -2552409700608
17 53611141985664
18 -880205240332224
19 12318269451041664
20 -115115298914746752