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A335577 as a simple table

na(n)
01
1-1
2-2
39
432
5-285
6-1236
718725
886176
9-2087001
10-9204580
11351964569
121336442304
13-83422970917
14-231889447076
1526389118293005
1635917342192064
17-10722110983670193
185028963509133756
195432569724760331841
20-14852185163192897120
21-3352369390318855889661

[1,-1,-2,9,32,-285,-1236,18725,86176,-2087001,
 -9204580,351964569,1336442304,-83422970917,
 -231889447076,26389118293005,35917342192064,
 -10722110983670193,5028963509133756,
 5432569724760331841,-14852185163192897120,
 -3352369390318855889661]