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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.

A243349 Difference between the n-th squarefree number and the index of its largest prime factor.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 4
6 3
7 7
8 6
9 7
10 10
11 12
12 10
13 11
14 17
15 17
16 14
17 20
18 19
19 27
20 20
21 28
22 27
23 31
24 25
25 30
26 33
27 28
28 38
29 29
30 37
31 32
32 44
33 37
34 50
35 49
36 48
37 42
38 43
39 51
40 59
41 61
42 48
43 60
44 66
45 51
46 52
47 62
48 72
49 72
50 57
51 69
52 60
53 78
54 72
55 77
56 65
57 85
58 82
59 79
60 87
61 72
62 75
63 95
64 76
65 101
66 90
67 79
68 80
69 105

List of values

[1, 1, 1, 2, 4, 3, 7, 6, 7, 10, 12, 10, 11, 17, 17, 14, 20, 19, 27, 20, 28, 27, 31, 25, 30, 33, 28, 38, 29, 37, 32, 44, 37, 50, 49, 48, 42, 43, 51, 59, 61, 48, 60, 66, 51, 52, 62, 72, 72, 57, 69, 60, 78, 72, 77, 65, 85, 82, 79, 87, 72, 75, 95, 76, 101, 90, 79, 80, 105]

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

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