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A013573 as a simple table

na(n)
01
11
2-1
30
49
5-20
665
7406
8-511
921624
1088577
111053426
1214764321
13143838916
142193647521
1529669704702
16457719400449
177433158061552
18128311987616769
192329120580336746
2045112841958764321
21905762343424701116

[1,1,-1,0,9,-20,65,406,-511,21624,88577,1053426,
 14764321,143838916,2193647521,29669704702,
 457719400449,7433158061552,128311987616769,
 2329120580336746,45112841958764321,
 905762343424701116]