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.

A213635 m*[n/m], where m is the least nondivisor of n (as in A007978) and [ ] = floor.

Table of values

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

List of values

[0, 0, 2, 3, 4, 4, 6, 6, 8, 9, 10, 10, 12, 12, 14, 15, 16, 16, 18, 18, 20, 21, 22, 20, 24, 24, 26, 27, 28, 28, 30, 30, 32, 33, 34, 35, 36, 36, 38, 39, 40, 40, 42, 42, 44, 45, 46, 45, 48, 48, 50, 51, 52, 52, 54, 54, 56, 57, 58, 56, 60, 60, 62, 63, 64, 64, 66, 66, 68]

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

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