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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.

A065677 Maximal Diffy_length for quadruples of numbers <= n.

Table of values

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

List of values

[0, 4, 4, 6, 7, 7, 7, 7, 7, 8, 8, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13]

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