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A018664
as a simple table
n
a(n)
1
1
2
2
3
4
4
5
5
10
6
20
7
41
8
82
9
164
10
205
11
410
12
820
[1,2,4,5,10,20,41,82,164,205,410,820]
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Last modified September 18 20:35 EDT 2024. Contains 376002 sequences. (Running on oeis4.)
