cp's OEIS Frontend

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.

A124808 Number of numbers k <= n such that k^2 + 1 is squarefree.

Table of values

n a(n)
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 17
19 18
20 19
21 20
22 21
23 22
24 23
25 24
26 25
27 26
28 27
29 28
30 29
31 30
32 30
33 31
34 32
35 33
36 34
37 35
38 35
39 36
40 37
41 37
42 38
43 38
44 39
45 40
46 41
47 42
48 43
49 44
50 45
51 46
52 47
53 48
54 49
55 50
56 51
57 51
58 52
59 53
60 54
61 55
62 56
63 57
64 58
65 59
66 60
67 61
68 61
69 62
70 62
71 63
72 64

List of values

[1, 2, 3, 4, 5, 6, 7, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 30, 31, 32, 33, 34, 35, 35, 36, 37, 37, 38, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 61, 62, 62, 63, 64]

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

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