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A013201 as a simple table

na(n)
00
11
2-3
310
4-51
5373
6-3305
734543
8-421722
95884933
10-92262997
111606210571
12-30753868288
13642299748231
14-14531175088131
15354020726656465
16-9240811268934752
17257285058656341145
18-7611050202054313081

[0,1,-3,10,-51,373,-3305,34543,-421722,5884933,
 -92262997,1606210571,-30753868288,642299748231,
 -14531175088131,354020726656465,-9240811268934752,
 257285058656341145,-7611050202054313081]