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A018511 as a simple table

n a(n)
1 1
2 2
3 3
4 6
5 7
6 13
7 14
8 21
9 26
10 39
11 42
12 78
13 91
14 182
15 273
16 546 

[1,2,3,6,7,13,14,21,26,39,42,78,91,182,273,546]

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Last modified April 19 10:56 EDT 2024. Contains 371791 sequences. (Running on oeis4.)