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.

A309081 a(n) = n - floor(n/2^2) + floor(n/3^2) - floor(n/4^2) + ...

Table of values

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

List of values

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