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A217031 as a simple table

n a(n)
1 0
2 1
3 3
4 4
5 5
6 6
7 6
8 7
9 7
10 7
11 9
12 9
13 9
14 9
15 10
16 10
17 10
18 11
19 11
20 11
21 12
22 12
23 12

[0,1,3,4,5,6,6,7,7,7,9,9,9,9,10,10,10,11,11,11,12,
 12,12]

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Last modified March 29 02:15 EDT 2024. Contains 371264 sequences. (Running on oeis4.)