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A031980 as a simple table

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 29
28 30
29 31
30 32
31 33
32 34
33 36
34 37
35 38
36 39
37 40
38 41
39 42
40 43
41 44
42 45
43 46
44 47
45 48
46 49
47 50
48 51
49 52
50 53
51 54
52 55
53 56
54 57
55 58
56 59
57 60
58 61
59 62
60 63
61 64
62 66
63 67
64 68
65 69
66 70
67 71
68 73
69 74
70 75
71 76
72 77

[1,2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,18,19,20,
 21,22,23,24,25,26,27,29,30,31,32,33,34,36,37,38,
 39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,
 55,56,57,58,59,60,61,62,63,64,66,67,68,69,70,71,
 73,74,75,76,77]

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Last modified November 15 06:24 EST 2019. Contains 329144 sequences. (Running on oeis4.)