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A208288 as a simple table

n a(n)
1 8
2 64
3 216
4 984
5 3984
6 16872
7 70216
8 294192
9 1229400
10 5142728
11 21504256
12 89933368
13 376090120
14 1572797488
15 6577333928
16 27506063752
17 115028758000
18 481043815944
19 2011697870456
20 8412806681456
21 35181880551080
22 147128631386264

[8,64,216,984,3984,16872,70216,294192,1229400,
 5142728,21504256,89933368,376090120,1572797488,
 6577333928,27506063752,115028758000,481043815944,
 2011697870456,8412806681456,35181880551080,
 147128631386264]

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Last modified May 22 00:02 EDT 2022. Contains 353931 sequences. (Running on oeis4.)