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.

A261524 Odd numbers n such that degree(gcd( 1 + x^n, 1 + (1+x)^n )) > 1, where the polynomials are over GF(2).

Table of values

n a(n)
1 3
2 7
3 9
4 15
5 21
6 27
7 31
8 33
9 35
10 39
11 45
12 49
13 51
14 57
15 63
16 69
17 73
18 75
19 77
20 81
21 85
22 87
23 91
24 93
25 99
26 105
27 111
28 117
29 119
30 123
31 127
32 129
33 133
34 135
35 141
36 147
37 153
38 155
39 159
40 161
41 165
42 171
43 175
44 177
45 183
46 189
47 195
48 201
49 203
50 207
51 213
52 217
53 219
54 225
55 231
56 237
57 243
58 245
59 249
60 255
61 259
62 261
63 267
64 273
65 279
66 285
67 287
68 291
69 297
70 301

List of values

[3, 7, 9, 15, 21, 27, 31, 33, 35, 39, 45, 49, 51, 57, 63, 69, 73, 75, 77, 81, 85, 87, 91, 93, 99, 105, 111, 117, 119, 123, 127, 129, 133, 135, 141, 147, 153, 155, 159, 161, 165, 171, 175, 177, 183, 189, 195, 201, 203, 207, 213, 217, 219, 225, 231, 237, 243, 245, 249, 255, 259, 261, 267, 273, 279, 285, 287, 291, 297, 301]