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A216897
as a simple table
n
a(n)
1
3
2
12
3
1080
4
18506880
5
2198278051200
6
28657168334177779210174055055360000
[3,12,1080,18506880,2198278051200, 28657168334177779210174055055360000]
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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)