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A050203 as a simple table

na(n)
11
2-1
32
4-6
521
6-79
7311
8-1266
95289
10-22553
1197763
12-429527
131908452
14-8560532
1538713510
16-176318081
17808018789
18-3723242051
1917239848937
20-80174546765
21374319144257
22-1753833845882
238243964424236
24-38865436663306

[1,-1,2,-6,21,-79,311,-1266,5289,-22553,97763,
 -429527,1908452,-8560532,38713510,-176318081,
 808018789,-3723242051,17239848937,-80174546765,
 374319144257,-1753833845882,8243964424236,
 -38865436663306]