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A281964 as a simple table

n a(n)
1 1
2 2
3 4
4 16
5 104
6 624
7 3648
8 29184
9 302976
10 3029760
11 29698560
12 356382720
13 5111976960
14 71567677440
15 986336870400
16 15781389926400
17 289206418636800
18 5205715535462400
19 92506221468057600
20 1850124429361152000
21 41285515024760832000
22 908281330544738304000

[1,2,4,16,104,624,3648,29184,302976,3029760,
 29698560,356382720,5111976960,71567677440,
 986336870400,15781389926400,289206418636800,
 5205715535462400,92506221468057600,
 1850124429361152000,41285515024760832000,
 908281330544738304000]

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Last modified July 13 23:31 EDT 2024. Contains 374290 sequences. (Running on oeis4.)