# A013336 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 3
4 -4
5 45
6 -180
7 1743
8 -13704
9 135705
10 -1613160
11 18065883
12 -276222604
13 3655783365
14 -65652672540
15 1034667581223
16 -20865280018704
17 387014665823025
18 -8593188683674320
19 184059142857923763
20 -4464138375366282004
21 108277288526211374685
22 -2858191345505462554500