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.

A259728 Sum of digits of a(n) equals the sum of digits of 4*a(n).

Table of values

n a(n)
1 0
2 3
3 6
4 9
5 15
6 18
7 27
8 30
9 33
10 36
11 39
12 45
13 48
14 51
15 54
16 57
17 60
18 63
19 66
20 69
21 81
22 84
23 87
24 90
25 93
26 96
27 99
28 105
29 108
30 126
31 129
32 135
33 138
34 150
35 153
36 156
37 159
38 165
39 168
40 177
41 180
42 183
43 186
44 189
45 195
46 198
47 225
48 228
49 252
50 261
51 264
52 267
53 270
54 273
55 282
56 291
57 294
58 297

List of values

[0, 3, 6, 9, 15, 18, 27, 30, 33, 36, 39, 45, 48, 51, 54, 57, 60, 63, 66, 69, 81, 84, 87, 90, 93, 96, 99, 105, 108, 126, 129, 135, 138, 150, 153, 156, 159, 165, 168, 177, 180, 183, 186, 189, 195, 198, 225, 228, 252, 261, 264, 267, 270, 273, 282, 291, 294, 297]