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A208649 as a simple table

n a(n)
1 1
2 1
3 1
4 3
5 6
6 40
7 150
8 2100
9 14700
10 423360
11 5556600
12 325987200
13 8068183200
14 958961203200
15 44996257706400
16 10799101849536000
17 965169727802280000
18 466713183932835840000
19 79775138681769651120000

[1,1,1,3,6,40,150,2100,14700,423360,5556600,
 325987200,8068183200,958961203200,44996257706400,
 10799101849536000,965169727802280000,
 466713183932835840000,79775138681769651120000]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)