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A285382 as a simple table

n a(n)
1 1
2 5
3 25
4 143
5 942
6 7074
7 59832
8 563688
9 5858640
10 66622320
11 823055040
12 10979133120
13 157300375680
14 2409321801600
15 39290164300800
16 679701862425600
17 12433400027596800
18 239791474805299200
19 4863054420016128000
20 103462238924835840000
21 2304147629440419840000

[1,5,25,143,942,7074,59832,563688,5858640,
 66622320,823055040,10979133120,157300375680,
 2409321801600,39290164300800,679701862425600,
 12433400027596800,239791474805299200,
 4863054420016128000,103462238924835840000,
 2304147629440419840000]

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Last modified April 25 16:38 EDT 2024. Contains 371989 sequences. (Running on oeis4.)