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A228797 as a simple table

n a(n)
1 2
2 2
3 8
4 16
5 42
6 98
7 240
8 576
9 1394
10 3362
11 8120
12 19600
13 47322
14 114242
15 275808
16 665856
17 1607522
18 3880898
19 9369320
20 22619536
21 54608394
22 131836322
23 318281040
24 768398400
25 1855077842
26 4478554082
27 10812186008
28 26102926096
29 63018038202
30 152139002498

[2,2,8,16,42,98,240,576,1394,3362,8120,19600,
 47322,114242,275808,665856,1607522,3880898,
 9369320,22619536,54608394,131836322,318281040,
 768398400,1855077842,4478554082,10812186008,
 26102926096,63018038202,152139002498]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)