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A052138 as a simple table

na(n)
11
2-1
31
4-5
5103
6-49
72971
8-34409
910787
10-567923
114857119
12-30312479
137045653829
14-77510407993
15262952596463
16-58196505296117
1774362625639717
18172749391066639
19-24672728226124829
20-12265872397466432881
211772477431815925044131

[1,-1,1,-5,103,-49,2971,-34409,10787,-567923,
 4857119,-30312479,7045653829,-77510407993,
 262952596463,-58196505296117,74362625639717,
 172749391066639,-24672728226124829,
 -12265872397466432881,1772477431815925044131]