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.

A162177 a(n) is the number of composite numbers that are smaller than A008578(n).

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 2
6 5
7 6
8 9
9 10
10 13
11 18
12 19
13 24
14 27
15 28
16 31
17 36
18 41
19 42
20 47
21 50
22 51
23 56
24 59
25 64
26 71
27 74
28 75
29 78
30 79
31 82
32 95
33 98
34 103
35 104
36 113
37 114
38 119
39 124
40 127
41 132
42 137
43 138
44 147
45 148
46 151
47 152
48 163
49 174
50 177
51 178
52 181
53 186
54 187
55 196
56 201
57 206
58 211
59 212
60 217
61 220
62 221

List of values

[0, 0, 0, 1, 2, 5, 6, 9, 10, 13, 18, 19, 24, 27, 28, 31, 36, 41, 42, 47, 50, 51, 56, 59, 64, 71, 74, 75, 78, 79, 82, 95, 98, 103, 104, 113, 114, 119, 124, 127, 132, 137, 138, 147, 148, 151, 152, 163, 174, 177, 178, 181, 186, 187, 196, 201, 206, 211, 212, 217, 220, 221]

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

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