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.

A306591 a(n) is the denominator of 1/2 - 1/(prime(n)+1), where prime(n) is the n-th prime.

Table of values

n a(n)
1 6
2 4
3 3
4 8
5 12
6 7
7 9
8 20
9 24
10 15
11 32
12 19
13 21
14 44
15 48
16 27
17 60
18 31
19 68
20 72
21 37
22 80
23 84
24 45
25 49
26 51
27 104
28 108
29 55
30 57
31 128
32 132
33 69
34 140
35 75
36 152
37 79
38 164
39 168
40 87
41 180
42 91
43 192
44 97
45 99
46 200
47 212
48 224
49 228
50 115
51 117
52 240
53 121
54 252
55 129
56 264
57 135
58 272
59 139
60 141
61 284
62 147
63 308
64 312
65 157

List of values

[6, 4, 3, 8, 12, 7, 9, 20, 24, 15, 32, 19, 21, 44, 48, 27, 60, 31, 68, 72, 37, 80, 84, 45, 49, 51, 104, 108, 55, 57, 128, 132, 69, 140, 75, 152, 79, 164, 168, 87, 180, 91, 192, 97, 99, 200, 212, 224, 228, 115, 117, 240, 121, 252, 129, 264, 135, 272, 139, 141, 284, 147, 308, 312, 157]