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A091005 as a simple table

na(n)
00
10
21
3-1
47
5-13
655
7-133
8463
9-1261
104039
11-11605
1235839
13-105469
14320503
15-953317
162876335
17-8596237
1825854247
19-77431669
20232557151
21-697147165
222092490071
23-6275373061
2418830313487
25-56482551853
26169464432775
27-508359743893
281525146340543

[0,0,1,-1,7,-13,55,-133,463,-1261,4039,-11605,
 35839,-105469,320503,-953317,2876335,-8596237,
 25854247,-77431669,232557151,-697147165,
 2092490071,-6275373061,18830313487,-56482551853,
 169464432775,-508359743893,1525146340543]