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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.

A381564 2-tone chromatic number of a path with n-2 vertices joined to two adjacent vertices.

Table of values

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

List of values

[8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16]

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

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