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A009054 as a simple table

na(n)
01
1-1
21
347
4-895
531
61002497
7-53580465
8-8587007
9305732208959
10-30437638147583
11-144862063593105
12545283874522872193
13-85823970766230251681
14-801780964397998270975
153637965188578615382687887

[1,-1,1,47,-895,31,1002497,-53580465,-8587007,
 305732208959,-30437638147583,-144862063593105,
 545283874522872193,-85823970766230251681,
 -801780964397998270975,3637965188578615382687887]