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A159851 as a simple table

na(n)
01
119
2119
3-6935
4-218159
52568059
6312765511
72213723041
8-487764037855
9-13553284526621
10804837668442391
1148090864254828249
12-1228751452551908111
13-163002147394507489205
14768611269232660622311
15566854889488011925250449
167980183992957668520769601

[1,19,119,-6935,-218159,2568059,312765511,
 2213723041,-487764037855,-13553284526621,
 804837668442391,48090864254828249,
 -1228751452551908111,-163002147394507489205,
 768611269232660622311,566854889488011925250449,
 7980183992957668520769601]