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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.

A188666 Largest m <= n such that lcm(m, m+1, ..., n) = lcm(1, 2, ..., n).

Table of values

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

List of values

[1, 2, 2, 3, 3, 4, 4, 5, 5, 7, 7, 7, 7, 8, 8, 9, 9, 11, 11, 11, 11, 13, 13, 13, 13, 16, 16, 16, 16, 16, 16, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 25, 25, 25, 25, 27, 27, 27, 27, 29, 29, 29, 29, 31, 31, 31, 31, 32, 32, 37, 37, 37, 37, 37, 37]

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

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