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.

A039562 Numbers whose base-4 representation has the same number of 1's, 2's and 3's.

Table of values

n a(n)
1 0
2 27
3 30
4 39
5 45
6 54
7 57
8 75
9 78
10 99
11 108
12 114
13 120
14 135
15 141
16 147
17 156
18 177
19 180
20 198
21 201
22 210
23 216
24 225
25 228
26 267
27 270
28 291
29 300
30 306
31 312
32 387
33 396
34 432
35 450
36 456
37 480
38 519
39 525
40 531
41 540
42 561
43 564
44 579
45 588
46 624
47 705
48 708
49 720
50 774
51 777
52 786
53 792
54 801

List of values

[0, 27, 30, 39, 45, 54, 57, 75, 78, 99, 108, 114, 120, 135, 141, 147, 156, 177, 180, 198, 201, 210, 216, 225, 228, 267, 270, 291, 300, 306, 312, 387, 396, 432, 450, 456, 480, 519, 525, 531, 540, 561, 564, 579, 588, 624, 705, 708, 720, 774, 777, 786, 792, 801]