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A089047 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 2
6 3
7 4
8 5
9 7
10 9
11 13
12 17
13 23
14 29
15 41
16 53
17 70
18 91
19 126
20 158
21 216
22 276
23 386
24 488
25 675
26 866
27 1179
28 1544
29 2136
30 2739
31 3755
32 4988
33 6443

[1,1,1,2,2,3,4,5,7,9,13,17,23,29,41,53,70,91,126,
 158,216,276,386,488,675,866,1179,1544,2136,2739,
 3755,4988,6443]

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Last modified June 24 01:22 EDT 2018. Contains 311819 sequences. (Running on oeis4.)