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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A107037 Indices of squarefree Jacobsthal numbers.

Table of values

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 19
18 21
19 22
20 23
21 24
22 25
23 26
24 28
25 29
26 30
27 31
28 32
29 33
30 34
31 35
32 37
33 38
34 39
35 41
36 43
37 44
38 46
39 47
40 48
41 49
42 50
43 51
44 52
45 53
46 56
47 57
48 58
49 59
50 61
51 62
52 64
53 65
54 66
55 67
56 68
57 69
58 70
59 71
60 73
61 74
62 75
63 76
64 77
65 78
66 79
67 82
68 83
69 85
70 86
71 87
72 88

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 59, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 82, 83, 85, 86, 87, 88]