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.

A134321 Positive integers with the same number of non-isolated divisors as isolated divisors. A divisor k of n is non-isolated if k-1 and/or k+1 also divides n. A divisor k of n is isolated if neither k-1 nor k+1 divides n.

Table of values

n a(n)
1 8
2 10
3 14
4 18
5 22
6 24
7 26
8 34
9 38
10 40
11 46
12 56
13 58
14 60
15 62
16 72
17 74
18 82
19 84
20 86
21 94
22 106
23 110
24 118
25 122
26 132
27 134
28 142
29 146
30 156
31 158
32 166
33 178
34 182
35 194
36 202
37 206
38 210
39 214
40 218
41 220
42 226
43 254
44 262
45 274
46 278
47 298
48 302
49 314
50 326
51 334
52 346
53 358
54 362

List of values

[8, 10, 14, 18, 22, 24, 26, 34, 38, 40, 46, 56, 58, 60, 62, 72, 74, 82, 84, 86, 94, 106, 110, 118, 122, 132, 134, 142, 146, 156, 158, 166, 178, 182, 194, 202, 206, 210, 214, 218, 220, 226, 254, 262, 274, 278, 298, 302, 314, 326, 334, 346, 358, 362]

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

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