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A257593
as a simple table
n
a(n)
3
2
4
4
5
10
6
18
7
46
8
100
9
204
10
420
11
840
12
1708
13
3478
14
7066
15
14286
16
28772
[2,4,10,18,46,100,204,420,840,1708,3478,7066, 14286,28772]
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Last modified September 28 12:40 EDT 2023. Contains 365735 sequences. (Running on oeis4.)