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A129209 as a simple table

na(n)
01
13
231
35283
4-113279
521166249443
6-518493692732129
7189797666150873887683
8-249563579992463717493803519
92960896329211804542556804051252803
10-115038188620995226180802686473825513089249

[1,3,31,5283,-113279,21166249443,-518493692732129,
 189797666150873887683,
 -249563579992463717493803519,
 2960896329211804542556804051252803,
 -115038188620995226180802686473825513089249]