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A245925 as a simple table

na(n)
01
1-3
225
3-243
42601
5-29403
6344569
7-4141875
850737129
9-630663003
107930793025
11-100681224075
121288236350025
13-16592960274075
14214939203248025
15-2797935722568243
1636578032462268649
17-480000660000226875
186320012816203363489
19-83462977778600141643
201105193229806740453201

[1,-3,25,-243,2601,-29403,344569,-4141875,
 50737129,-630663003,7930793025,-100681224075,
 1288236350025,-16592960274075,214939203248025,
 -2797935722568243,36578032462268649,
 -480000660000226875,6320012816203363489,
 -83462977778600141643,1105193229806740453201]