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A249308 as a simple table

n a(n)
0 1
1 2
2 8
3 16
4 96
5 192
6 1280
7 2560
8 17920
9 35840
10 258048
11 516096
12 3784704
13 7569408
14 56229888
15 112459776
16 843448320
17 1686896640
18 12745441280
19 25490882560
20 193730707456
21 387461414912
22 2958796259328
23 5917592518656
24 45368209309696
25 90736418619392
26 697972450918400

[1,2,8,16,96,192,1280,2560,17920,35840,258048,
 516096,3784704,7569408,56229888,112459776,
 843448320,1686896640,12745441280,25490882560,
 193730707456,387461414912,2958796259328,
 5917592518656,45368209309696,90736418619392,
 697972450918400]

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Last modified March 28 19:41 EDT 2020. Contains 333103 sequences. (Running on oeis4.)