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.

A250041 Numbers n such that m = floor(n/10) is not coprime to n and, if nonzero, m is also a term of the sequence.

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 20
10 22
11 24
12 26
13 28
14 30
15 33
16 36
17 39
18 40
19 42
20 44
21 46
22 48
23 50
24 55
25 60
26 62
27 63
28 64
29 66
30 68
31 69
32 70
33 77
34 80
35 82
36 84
37 86
38 88
39 90
40 93
41 96
42 99
43 200
44 202
45 204
46 205
47 206
48 208
49 220
50 222
51 224
52 226
53 228
54 240
55 242
56 243
57 244
58 246
59 248
60 249
61 260
62 262

List of values

[2, 3, 4, 5, 6, 7, 8, 9, 20, 22, 24, 26, 28, 30, 33, 36, 39, 40, 42, 44, 46, 48, 50, 55, 60, 62, 63, 64, 66, 68, 69, 70, 77, 80, 82, 84, 86, 88, 90, 93, 96, 99, 200, 202, 204, 205, 206, 208, 220, 222, 224, 226, 228, 240, 242, 243, 244, 246, 248, 249, 260, 262]

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

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