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A054873 as a simple table

n a(n)
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 40320
9 357840
10 3427200
11 34685280
12 365541120
13 3971615760
14 44181889920
15 500788985760
16 5763231048960
17 67163932069920
18 791030794095360
19 9400660122813120
20 112587818898562560

[1,2,6,24,120,720,5040,40320,357840,3427200,
 34685280,365541120,3971615760,44181889920,
 500788985760,5763231048960,67163932069920,
 791030794095360,9400660122813120,
 112587818898562560]

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Last modified July 24 06:56 EDT 2021. Contains 346273 sequences. (Running on oeis4.)