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A015147 as a simple table

na(n)
01
11
21
31
4-21
51
61
7463
8463
91
101
11-10185
12224555
13-10185
141
151
16224071
17108674435
18108674435
19224071
201
211
22-4929561
2352598650611
24-1157056709445
2552598650611
26-4929561
271
281
29108450343
3025457741966163
3112320392440820971

[1,1,1,1,-21,1,1,463,463,1,1,-10185,224555,-10185,
 1,1,224071,108674435,108674435,224071,1,1,
 -4929561,52598650611,-1157056709445,52598650611,
 -4929561,1,1,108450343,25457741966163,
 12320392440820971]