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A133989 as a simple table

n a(n)
1 0
2 1
3 1
4 1
5 2
6 1
7 2
8 1
9 2
10 2
11 2
12 3
13 2

[0,1,1,1,2,1,2,1,2,2,2,3,2]

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Last modified June 23 12:08 EDT 2021. Contains 345401 sequences. (Running on oeis4.)