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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.

A278078 a(n) is the number of composite numbers prime(n) dominates.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 1
7 2
8 2
9 2
10 3
11 3
12 4
13 4
14 4
15 4
16 5
17 5
18 5
19 6
20 6
21 6
22 6
23 7
24 7
25 7
26 8
27 8
28 8
29 8
30 8
31 9
32 9
33 9
34 9
35 10
36 10
37 10
38 10
39 10
40 11
41 11
42 11
43 11
44 11
45 12
46 12
47 12
48 12
49 13
50 13
51 13
52 13
53 13
54 13
55 14
56 14
57 14
58 14
59 14
60 14
61 14
62 15
63 15
64 15
65 15
66 15
67 16
68 16
69 16
70 16
71 16
72 16
73 17
74 17

List of values

[0, 0, 0, 0, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17]

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

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