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A026392 as a simple table

n a(n)
1 1
2 2
3 4
4 8
5 17
6 34
7 75
8 150
9 339
10 678
11 1558
12 3116
13 7247
14 14494
15 34016
16 68032
17 160795
18 321590
19 764388
20 1528776
21 3650571
22 7301142
23 17501619
24 35003238
25 84179877
26 168359754
27 406020930
28 812041860
29 1963073865
30 3926147730

[1,2,4,8,17,34,75,150,339,678,1558,3116,7247,
 14494,34016,68032,160795,321590,764388,1528776,
 3650571,7301142,17501619,35003238,84179877,
 168359754,406020930,812041860,1963073865,
 3926147730]

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Last modified March 18 11:15 EDT 2019. Contains 321283 sequences. (Running on oeis4.)