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A026392 as a simple table

n a(n)
0 1
1 2
2 4
3 8
4 17
5 34
6 75
7 150
8 339
9 678
10 1558
11 3116
12 7247
13 14494
14 34016
15 68032
16 160795
17 321590
18 764388
19 1528776
20 3650571
21 7301142
22 17501619
23 35003238
24 84179877
25 168359754
26 406020930
27 812041860
28 1963073865
29 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 May 22 11:27 EDT 2013. Contains 225528 sequences.