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.

A242057 Even numbers n for which lpf_3(n-1) < lpf_3(n-3), where lpf_3(n) = lpf(n/3^t) (cf. A020639) such that 3^t (t>=0) is the maximal power of 3 which divides n.

Table of values

n a(n)
1 10
2 16
3 22
4 26
5 28
6 34
7 36
8 40
9 46
10 50
11 56
12 64
13 66
14 70
15 76
16 82
17 86
18 92
19 96
20 100
21 106
22 112
23 116
24 120
25 126
26 130
27 134
28 136
29 142
30 144
31 146
32 154
33 156
34 160
35 162
36 166
37 170
38 176
39 184
40 186
41 190
42 196
43 202
44 204
45 206
46 210
47 214
48 216
49 222
50 226
51 232
52 236
53 244
54 254
55 256
56 260

List of values

[10, 16, 22, 26, 28, 34, 36, 40, 46, 50, 56, 64, 66, 70, 76, 82, 86, 92, 96, 100, 106, 112, 116, 120, 126, 130, 134, 136, 142, 144, 146, 154, 156, 160, 162, 166, 170, 176, 184, 186, 190, 196, 202, 204, 206, 210, 214, 216, 222, 226, 232, 236, 244, 254, 256, 260]

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

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