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.

A231271 Numbers k such that k and k+d are both odious (A000069) or both evil (A001969) for every divisor d of k.

Table of values

n a(n)
1 1
2 5
3 7
4 9
5 13
6 17
7 23
8 29
9 31
10 37
11 41
12 49
13 53
14 61
15 71
16 73
17 85
18 89
19 97
20 101
21 103
22 109
23 113
24 119
25 125
26 127
27 129
28 133
29 137
30 149
31 151
32 157
33 167
34 173
35 181
36 193
37 197
38 199
39 217
40 223
41 229
42 233
43 241
44 249
45 257
46 263
47 269
48 277
49 281
50 293
51 311
52 313
53 317
54 321
55 325
56 337
57 341

List of values

[1, 5, 7, 9, 13, 17, 23, 29, 31, 37, 41, 49, 53, 61, 71, 73, 85, 89, 97, 101, 103, 109, 113, 119, 125, 127, 129, 133, 137, 149, 151, 157, 167, 173, 181, 193, 197, 199, 217, 223, 229, 233, 241, 249, 257, 263, 269, 277, 281, 293, 311, 313, 317, 321, 325, 337, 341]

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

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