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.

A208135 Numbers that match polynomials over {0,1} that have a factor containing a negative coefficient.

Table of values

n a(n)
1 9
2 18
3 21
4 27
5 33
6 35
7 36
8 39
9 42
10 45
11 49
12 54
13 57
14 63
15 65
16 66
17 70
18 72
19 75
20 78
21 84
22 90
23 93
24 98
25 99
26 105
27 108
28 114
29 126
30 129
31 130
32 132
33 133
34 135
35 140
36 141
37 144
38 147
39 150
40 153
41 155
42 156
43 159
44 161
45 165
46 168
47 175
48 177
49 180
50 183
51 186
52 189
53 195
54 196
55 198
56 201

List of values

[9, 18, 21, 27, 33, 35, 36, 39, 42, 45, 49, 54, 57, 63, 65, 66, 70, 72, 75, 78, 84, 90, 93, 98, 99, 105, 108, 114, 126, 129, 130, 132, 133, 135, 140, 141, 144, 147, 150, 153, 155, 156, 159, 161, 165, 168, 175, 177, 180, 183, 186, 189, 195, 196, 198, 201]