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A012579 as a simple table

na(n)
00
10
22
3-3
44
5-20
6-82
71701
8-13176
9102096
10-741798
112555685
1232996940
13-986649300
1417351145030
15-237817720035
162593221000720
17-18017408438400
18-162521065585230
1910623453347243565
20-281538871670714220
215556579737347871820
22-89014595698012503330
23977317781020921150965

[0,0,2,-3,4,-20,-82,1701,-13176,102096,-741798,
 2555685,32996940,-986649300,17351145030,
 -237817720035,2593221000720,-18017408438400,
 -162521065585230,10623453347243565,
 -281538871670714220,5556579737347871820,
 -89014595698012503330,977317781020921150965]