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.

A091678 In base 4, numbers n of the form k + reverse(k) for at least one k.

Table of values

n a(n)
0 0
1 2
2 4
3 5
4 6
5 10
6 15
7 17
8 20
9 25
10 30
11 33
12 34
13 41
14 42
15 50
16 51
17 58
18 59
19 65
20 67
21 68
22 75
23 76
24 84
25 85
26 92
27 93
28 101
29 102
30 105
31 109
32 110
33 118
34 125
35 126
36 130
37 145
38 150
39 165
40 170
41 185
42 190
43 195
44 210
45 215
46 230
47 235
48 250
49 255
50 257
51 260
52 275
53 280
54 289
55 295
56 300
57 315
58 320
59 321

List of values

[0, 2, 4, 5, 6, 10, 15, 17, 20, 25, 30, 33, 34, 41, 42, 50, 51, 58, 59, 65, 67, 68, 75, 76, 84, 85, 92, 93, 101, 102, 105, 109, 110, 118, 125, 126, 130, 145, 150, 165, 170, 185, 190, 195, 210, 215, 230, 235, 250, 255, 257, 260, 275, 280, 289, 295, 300, 315, 320, 321]