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.

A354712 Nonprime numbers k such that the number of divisors of k divides k-1.

Table of values

n a(n)
1 1
2 4
3 16
4 21
5 25
6 33
7 49
8 57
9 64
10 65
11 69
12 77
13 81
14 85
15 93
16 100
17 105
18 121
19 125
20 129
21 133
22 141
23 145
24 161
25 169
26 175
27 177
28 185
29 201
30 205
31 209
32 213
33 217
34 221
35 237
36 249
37 253
38 265
39 273
40 289
41 297
42 301
43 305
44 309
45 321
46 325
47 329
48 341
49 345
50 361
51 365
52 377
53 381
54 385
55 393
56 413
57 417
58 437
59 445
60 453
61 465

List of values

[1, 4, 16, 21, 25, 33, 49, 57, 64, 65, 69, 77, 81, 85, 93, 100, 105, 121, 125, 129, 133, 141, 145, 161, 169, 175, 177, 185, 201, 205, 209, 213, 217, 221, 237, 249, 253, 265, 273, 289, 297, 301, 305, 309, 321, 325, 329, 341, 345, 361, 365, 377, 381, 385, 393, 413, 417, 437, 445, 453, 465]

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

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