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A114631 as a simple table

na(n)
11
21
30
424
5384
6702720
76231859200
81364560466411520

[1,1,0,24,384,702720,6231859200,1364560466411520]

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Last modified September 23 17:39 EDT 2024. Contains 376178 sequences. (Running on oeis4.)