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A159249 as a simple table

na(n)
01
13
2-41
3-423
44881
599243
6-922521
7-32540463
8225260961
913691968083
10-60291528201
11-7026858626103
1212079764632241
134252354469558523
144905216397718919
15-2961932479497809343
16-12564709736782617279
172331851854387899622563
1817675558839428923554839

[1,3,-41,-423,4881,99243,-922521,-32540463,
 225260961,13691968083,-60291528201,-7026858626103,
 12079764632241,4252354469558523,4905216397718919,
 -2961932479497809343,-12564709736782617279,
 2331851854387899622563,17675558839428923554839]