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A295383 as a simple table

na(n)
01
1-4
272
3-2400
4117600
5-7620480
6614718720
7-59364264960
86678479808000
9-857813628672000
10123868287980236800
11-19863969090648883200
123502679882984419737600
13-673592285189311488000000
14140299650258002307072000000
15-31464534897861317399347200000

[1,-4,72,-2400,117600,-7620480,614718720,
 -59364264960,6678479808000,-857813628672000,
 123868287980236800,-19863969090648883200,
 3502679882984419737600,-673592285189311488000000,
 140299650258002307072000000,
 -31464534897861317399347200000]