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.

A171901 Numbers with at least two identical neighboring digits in their decimal representation.

Table of values

n a(n)
1 11
2 22
3 33
4 44
5 55
6 66
7 77
8 88
9 99
10 100
11 110
12 111
13 112
14 113
15 114
16 115
17 116
18 117
19 118
20 119
21 122
22 133
23 144
24 155
25 166
26 177
27 188
28 199
29 200
30 211
31 220
32 221
33 222
34 223
35 224
36 225
37 226
38 227
39 228
40 229
41 233
42 244
43 255
44 266
45 277
46 288
47 299
48 300
49 311
50 322
51 330
52 331
53 332
54 333

List of values

[11, 22, 33, 44, 55, 66, 77, 88, 99, 100, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 122, 133, 144, 155, 166, 177, 188, 199, 200, 211, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 233, 244, 255, 266, 277, 288, 299, 300, 311, 322, 330, 331, 332, 333]