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A181630 as a simple table

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

[1,1,2,2,2,3,2,3,3,3,4,3,3,4,3,4,4,4,5]

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Last modified April 20 12:36 EDT 2024. Contains 371844 sequences. (Running on oeis4.)