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A136354 as a simple table

n a(n)
1 9
2 15
3 105
4 3465
5 15015
6 765765
7 33948915
8 334639305
9 3234846615
10 100280245065
11 3710369067405
12 1369126185872445
13 32706903329175075
14 307444891294245705
15 211829530101735290745
16 961380175077106319535
17 762374478836145311391255 

[9,15,105,3465,15015,765765,33948915,334639305,
 3234846615,100280245065,3710369067405,
 1369126185872445,32706903329175075,
 307444891294245705,211829530101735290745,
 961380175077106319535,762374478836145311391255]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)