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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.

A374330 a(n) is the number of numbers k <= prime(n)^2 such that A075860(k) = prime(n).

Table of values

n a(n)
1 2
2 2
3 6
4 8
5 2
6 10
7 3
8 14
9 6
10 8
11 22
12 7
13 8
14 21
15 9
16 14
17 12
18 45
19 14
20 17
21 45
22 17
23 21
24 20
25 18
26 17
27 64
28 21
29 54
30 28
31 25
32 22
33 22
34 72
35 37
36 82
37 26
38 28
39 31
40 43
41 36
42 93
43 44
44 95
45 38
46 95
47 41
48 38
49 33
50 106
51 36
52 49
53 111
54 65
55 53
56 53
57 49
58 113
59 55
60 68
61 138
62 80
63 49
64 50
65 152
66 61
67 55
68 43
69 73
70 120

List of values

[2, 2, 6, 8, 2, 10, 3, 14, 6, 8, 22, 7, 8, 21, 9, 14, 12, 45, 14, 17, 45, 17, 21, 20, 18, 17, 64, 21, 54, 28, 25, 22, 22, 72, 37, 82, 26, 28, 31, 43, 36, 93, 44, 95, 38, 95, 41, 38, 33, 106, 36, 49, 111, 65, 53, 53, 49, 113, 55, 68, 138, 80, 49, 50, 152, 61, 55, 43, 73, 120]

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

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