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A123335 as a simple table

na(n)
01
1-1
23
3-7
417
5-41
699
7-239
8577
9-1393
103363
11-8119
1219601
13-47321
14114243
15-275807
16665857
17-1607521
183880899
19-9369319
2022619537
21-54608393
22131836323
23-318281039
24768398401
25-1855077841
264478554083
27-10812186007
2826102926097
29-63018038201
30152139002499

[1,-1,3,-7,17,-41,99,-239,577,-1393,3363,-8119,
 19601,-47321,114243,-275807,665857,-1607521,
 3880899,-9369319,22619537,-54608393,131836323,
 -318281039,768398401,-1855077841,4478554083,
 -10812186007,26102926097,-63018038201,
 152139002499]