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A318179 as a simple table

na(n)
01
11
2-3
35
425
5-343
62133
7-3603
8-112975
91938897
10-18008275
1155198805
121753746377
13-45801271943
14649021707397
15-4682002329795
16-50792700319903
172692784088681889
18-59182401177647011
19801759226622986917
20-2169423359710146183
21-263145142263538606519
229869607872225170545333

[1,1,-3,5,25,-343,2133,-3603,-112975,1938897,
 -18008275,55198805,1753746377,-45801271943,
 649021707397,-4682002329795,-50792700319903,
 2692784088681889,-59182401177647011,
 801759226622986917,-2169423359710146183,
 -263145142263538606519,9869607872225170545333]