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A206927 as a simple table

n a(n)
1 2
2 4
3 9
4 18
5 37
6 75
7 150
8 300
9 601
10 1202
11 2405
12 4811
13 9622
14 19244
15 38489
16 76978
17 153957
18 307915
19 615830
20 1231660
21 2463321
22 4926642
23 9853285
24 19706571
25 39413142
26 78826284
27 157652569
28 315305138
29 630610277
30 1261220555

[2,4,9,18,37,75,150,300,601,1202,2405,4811,9622,
 19244,38489,76978,153957,307915,615830,1231660,
 2463321,4926642,9853285,19706571,39413142,
 78826284,157652569,315305138,630610277,1261220555]

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Last modified April 24 22:26 EDT 2019. Contains 322446 sequences. (Running on oeis4.)