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A010843 as a simple table

na(n)
11
2-2
35
4-12
533
6-78
7261
8-360
93681
1013446
11193509
121951452
1323948865
14309740922
154341155877
1665102989248
171041690874689
1817708615729550
19318755470552389
206056352778233924
21121127059051462881
222543668229620367298

[1,-2,5,-12,33,-78,261,-360,3681,13446,193509,
 1951452,23948865,309740922,4341155877,65102989248,
 1041690874689,17708615729550,318755470552389,
 6056352778233924,121127059051462881,
 2543668229620367298]