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A138176 as a simple table

na(n)
01
1-4
2144
3-43264
4106832896
5-2155963622400
6354617391605760000
7-474686810341051524710400
85166329306435680284163452174336
9-456900249341808231214942590547243565056

[1,-4,144,-43264,106832896,-2155963622400,
 354617391605760000,-474686810341051524710400,
 5166329306435680284163452174336,
 -456900249341808231214942590547243565056]