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A009583 as a simple table

na(n)
00
11
2-1
30
4-6
535
6-75
7784
8-10052
961221
10-392445
116267976
12-85062714
13868090431
14-10957052015
15185215163288
16-2957955829800
1745586843784873
18-803382792009849
1915611619063139568
20-304944064099178510

[0,1,-1,0,-6,35,-75,784,-10052,61221,-392445,
 6267976,-85062714,868090431,-10957052015,
 185215163288,-2957955829800,45586843784873,
 -803382792009849,15611619063139568,
 -304944064099178510]