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A028780 as a simple table

n a(n)
1 2
2 3
3 5
4 7
5 8
6 11
7 12
8 13
9 18
10 20
11 27
12 28
13 30
14 31
15 32
16 34
17 38
18 41
19 42
20 43
21 44
22 45
23 46
24 48
25 50
26 51
27 52
28 53
29 57
30 58
31 61
32 63
33 66 

[2,3,5,7,8,11,12,13,18,20,27,28,30,31,32,34,38,41,
 42,43,44,45,46,48,50,51,52,53,57,58,61,63,66]

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Last modified April 24 11:12 EDT 2024. Contains 371936 sequences. (Running on oeis4.)