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A009547 as a simple table

na(n)
00
12
2-4
3-42
4-8
55354
699956
722974
8-72550928
9-3076799278
10-44239291156
114012843624614
12426360266016232
1320979538126746554
14-55444364705437852
15-137742540801276301170
16-16928772211833384004640

[0,2,-4,-42,-8,5354,99956,22974,-72550928,
 -3076799278,-44239291156,4012843624614,
 426360266016232,20979538126746554,
 -55444364705437852,-137742540801276301170,
 -16928772211833384004640]