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A081358 as a simple table

n a(n)
0 0
1 1
2 2
3 8
4 32
5 184
6 1104
7 8448
8 67584
9 648576
10 6485760
11 74972160
12 899665920
13 12174658560
14 170445219840
15 2643856588800
16 42301705420800
17 740051782041600
18 13320932076748800
19 259500083163955200
20 5190001663279104000
21 111422936937037824000
22 2451304612614832128000

[0,1,2,8,32,184,1104,8448,67584,648576,6485760,
 74972160,899665920,12174658560,170445219840,
 2643856588800,42301705420800,740051782041600,
 13320932076748800,259500083163955200,
 5190001663279104000,111422936937037824000,
 2451304612614832128000]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)