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.

A082421 Numbers n such that P(n+1) < P(n) < P(n+2), where P(n) = largest prime factor of n (A006530).

Table of values

n a(n)
1 3
2 5
3 11
4 15
5 17
6 29
7 35
8 39
9 41
10 44
11 49
12 51
13 55
14 59
15 63
16 65
17 69
18 71
19 80
20 87
21 95
22 99
23 101
24 104
25 107
26 111
27 116
28 129
29 137
30 143
31 149
32 153
33 155
34 161
35 164
36 179
37 186
38 191
39 195
40 197
41 203
42 209
43 224
44 227
45 230
46 237
47 239
48 242
49 249
50 255
51 265
52 267
53 269
54 272
55 279
56 281
57 285
58 291
59 296
60 299

List of values

[3, 5, 11, 15, 17, 29, 35, 39, 41, 44, 49, 51, 55, 59, 63, 65, 69, 71, 80, 87, 95, 99, 101, 104, 107, 111, 116, 129, 137, 143, 149, 153, 155, 161, 164, 179, 186, 191, 195, 197, 203, 209, 224, 227, 230, 237, 239, 242, 249, 255, 265, 267, 269, 272, 279, 281, 285, 291, 296, 299]

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

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