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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.

A375712 Numbers k such that A013929(k+1) - A013929(k) = 4. In other words, the k-th nonsquarefree number is 4 less than the next nonsquarefree number.

Table of values

n a(n)
1 1
2 4
3 7
4 11
5 12
6 13
7 14
8 22
9 25
10 26
11 29
12 32
13 35
14 39
15 40
16 41
17 42
18 50
19 53
20 54
21 61
22 64
23 70
24 71
25 72
26 75
27 78
28 81
29 82
30 83
31 84
32 87
33 90
34 98
35 99
36 102
37 109
38 110
39 117
40 120
41 123
42 124
43 127
44 135
45 139
46 140
47 144
48 151
49 154
50 155
51 156
52 157
53 160
54 163
55 168
56 169
57 170
58 173
59 176
60 179

List of values

[1, 4, 7, 11, 12, 13, 14, 22, 25, 26, 29, 32, 35, 39, 40, 41, 42, 50, 53, 54, 61, 64, 70, 71, 72, 75, 78, 81, 82, 83, 84, 87, 90, 98, 99, 102, 109, 110, 117, 120, 123, 124, 127, 135, 139, 140, 144, 151, 154, 155, 156, 157, 160, 163, 168, 169, 170, 173, 176, 179]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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