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A051661 as a simple table

n a(n)
0 1
1 2
2 3
3 4
4 5
5 6
6 8
7 9
8 10
9 12
10 15
11 16
12 18
13 20
14 23
15 24
16 25
17 27
18 30
19 34
20 35
21 36
22 37
23 38
24 39
25 42
26 52
27 56
28 67
29 68
30 77
31 80
32 86
33 87
34 99
35 120
36 137
37 143
38 150
39 188

[1,2,3,4,5,6,8,9,10,12,15,16,18,20,23,24,25,27,30,
 34,35,36,37,38,39,42,52,56,67,68,77,80,86,87,99,
 120,137,143,150,188]

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Last modified May 10 05:10 EDT 2021. Contains 343748 sequences. (Running on oeis4.)