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A143848 as a simple table

na(n)
11
21
30
4-9
580
66111
729951360
8-207256402585089
9-3919788933040280447085605363200
1014683863149476410414382246646213355893861151824423487368369151

[1,1,0,-9,80,6111,29951360,-207256402585089,
 -3919788933040280447085605363200,
 14683863149476410414382246646213355893861151824423\
 487368369151]