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A297214 as a simple table

na(n)
01
1-1
28
3-127
43523
5-146964
68538477
7-655457233
863974756924
9-7713566822979
101123255462229507
11-193995005614903728
1239147722262966666217
13-9115873617718182207793
142423565558533387761866928
15-728969374928760685473620951
16246100624914698937364249220851

[1,-1,8,-127,3523,-146964,8538477,-655457233,
 63974756924,-7713566822979,1123255462229507,
 -193995005614903728,39147722262966666217,
 -9115873617718182207793,2423565558533387761866928,
 -728969374928760685473620951,
 246100624914698937364249220851]