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A013504 as a simple table

na(n)
02
12
2-176158
3-1468303198
4-23972242057918
5-659094144077286718
6-17783195610659060805598
72907154691514883581324639842
81898415071310817291664803882934402
91068476725686706833449994431404467473282
10726967725616567229436454165277652418918762082

[2,2,-176158,-1468303198,-23972242057918,
 -659094144077286718,-17783195610659060805598,
 2907154691514883581324639842,
 1898415071310817291664803882934402,
 1068476725686706833449994431404467473282,
 726967725616567229436454165277652418918762082]