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.

A074821 Numbers k such that tau(k) = tau(2k+1).

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 10
6 11
7 23
8 27
9 29
10 34
11 38
12 41
13 46
14 53
15 55
16 57
17 62
18 76
19 77
20 83
21 89
22 91
23 93
24 106
25 113
26 118
27 123
28 129
29 131
30 133
31 136
32 143
33 145
34 159
35 161
36 173
37 177
38 179
39 185
40 191
41 201
42 203
43 205
44 206
45 212
46 213
47 218
48 226
49 232
50 233
51 235
52 239
53 251
54 259
55 267
56 281
57 291
58 293

List of values

[2, 3, 4, 5, 10, 11, 23, 27, 29, 34, 38, 41, 46, 53, 55, 57, 62, 76, 77, 83, 89, 91, 93, 106, 113, 118, 123, 129, 131, 133, 136, 143, 145, 159, 161, 173, 177, 179, 185, 191, 201, 203, 205, 206, 212, 213, 218, 226, 232, 233, 235, 239, 251, 259, 267, 281, 291, 293]