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A158970 as a simple table

na(n)
01
1-23
2251
3-1288
4123253
5-109480
612733691
7-7288792
8590522773
9-485103304
1080902890055
11-23869637176
12183053106226063
13-2930103360808
1433681593925917
15473149598624360
16-271693384725008779
17-320233698263629192
18391126712084649544217
19220861153517835364616

[1,-23,251,-1288,123253,-109480,12733691,-7288792,
 590522773,-485103304,80902890055,-23869637176,
 183053106226063,-2930103360808,33681593925917,
 473149598624360,-271693384725008779,
 -320233698263629192,391126712084649544217,
 220861153517835364616]