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A085864 as a simple table

n a(n)
1 2
2 4
3 12
4 72
5 864
6 20736
7 933120
8 117573120
9 42326323200
10 36315985305600
11 146426052752179200
12 1475974611741966336000
13 37784950060594338201600000
14 2031318915257551621718016000000
15 212719716805770805826310635520000000 

[2,4,12,72,864,20736,933120,117573120,42326323200,
 36315985305600,146426052752179200,
 1475974611741966336000,37784950060594338201600000,
 2031318915257551621718016000000,
 212719716805770805826310635520000000]

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Last modified May 29 00:29 EDT 2024. Contains 372921 sequences. (Running on oeis4.)