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.

A267509 Integers whose base-10 representation (Bm,...,B1,B0) is such that the polynomial f(x) = B0 + B1*x + ... + Bm*x^m is reducible over the ring of integers, 0 <= Bi <= 9.

Table of values

n a(n)
1 4
2 6
3 8
4 9
5 20
6 22
7 24
8 26
9 28
10 30
11 33
12 36
13 39
14 40
15 42
16 44
17 46
18 48
19 50
20 55
21 60
22 62
23 63
24 64
25 66
26 68
27 69
28 70
29 77
30 80
31 82
32 84
33 86
34 88
35 90
36 93
37 96
38 99
39 100
40 110
41 120
42 121
43 130
44 132
45 140
46 143
47 144
48 150
49 154
50 156
51 160
52 165
53 168
54 169
55 170
56 176
57 180
58 187
59 190
60 198
61 200

List of values

[4, 6, 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, 100, 110, 120, 121, 130, 132, 140, 143, 144, 150, 154, 156, 160, 165, 168, 169, 170, 176, 180, 187, 190, 198, 200]