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.

A278291 Numbers n such that n-1 has the same number of prime factors as n (with multiplicity).

Table of values

n a(n)
1 3
2 10
3 15
4 22
5 26
6 28
7 34
8 35
9 39
10 45
11 58
12 76
13 86
14 87
15 94
16 95
17 99
18 117
19 119
20 122
21 123
22 125
23 134
24 136
25 142
26 143
27 146
28 148
29 154
30 159
31 165
32 171
33 172
34 175
35 178
36 202
37 203
38 206
39 214
40 215
41 218
42 219
43 231
44 245
45 246
46 254
47 285
48 286
49 297
50 299
51 302
52 303
53 327
54 333
55 335
56 351
57 357
58 362
59 370
60 376
61 382
62 388
63 394
64 395

List of values

[3, 10, 15, 22, 26, 28, 34, 35, 39, 45, 58, 76, 86, 87, 94, 95, 99, 117, 119, 122, 123, 125, 134, 136, 142, 143, 146, 148, 154, 159, 165, 171, 172, 175, 178, 202, 203, 206, 214, 215, 218, 219, 231, 245, 246, 254, 285, 286, 297, 299, 302, 303, 327, 333, 335, 351, 357, 362, 370, 376, 382, 388, 394, 395]

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

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