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A018399 as a simple table

n a(n)
1 1
2 2
3 3
4 4
5 6
6 7
7 8
8 12
9 14
10 16
11 21
12 24
13 28
14 42
15 48
16 56
17 84
18 112
19 168
20 336 

[1,2,3,4,6,7,8,12,14,16,21,24,28,42,48,56,84,112,
 168,336]

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Last modified April 26 16:04 EDT 2024. Contains 372003 sequences. (Running on oeis4.)