# A013282 (b-file synthesized from sequence entry)
0 0
1 0
2 -1
3 4
4 -6
5 8
6 -105
7 572
8 700
9 -18800
10 50715
11 -903388
12 31286574
13 -466481992
14 5285891611
15 -81297834980
16 1566498967800
17 -27364241296480
18 457841251437399
19 -8635414723705660
20 179513823574755490
21 -3746483398412176664
22 79423193110930596543
23 -1794737225880978532228