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A261214 as a simple table

na(n)
01
1-3
20
3-4
4-33
5-283
6-2785
7-31291
8-395360
9-5544754
10-85427259
11-1433955817
12-26046643595
13-509070113635
14-10653941722236
15-237754202827284
16-5636787946661521
17-141514316248243499
18-3751121064314067653
19-104704135027419849139
20-3070176356776990397500

[1,-3,0,-4,-33,-283,-2785,-31291,-395360,-5544754,
 -85427259,-1433955817,-26046643595,-509070113635,
 -10653941722236,-237754202827284,
 -5636787946661521,-141514316248243499,
 -3751121064314067653,-104704135027419849139,
 -3070176356776990397500]