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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.

A319720 Write n in 4-ary, sort digits into decreasing order.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 4
5 5
6 9
7 13
8 8
9 9
10 10
11 14
12 12
13 13
14 14
15 15
16 16
17 20
18 36
19 52
20 20
21 21
22 37
23 53
24 36
25 37
26 41
27 57
28 52
29 53
30 57
31 61
32 32
33 36
34 40
35 56
36 36
37 37
38 41
39 57
40 40
41 41
42 42
43 58
44 56
45 57
46 58
47 62
48 48
49 52
50 56
51 60
52 52
53 53
54 57
55 61
56 56
57 57
58 58
59 62
60 60
61 61
62 62
63 63
64 64
65 80
66 144
67 208
68 80
69 84

List of values

[0, 1, 2, 3, 4, 5, 9, 13, 8, 9, 10, 14, 12, 13, 14, 15, 16, 20, 36, 52, 20, 21, 37, 53, 36, 37, 41, 57, 52, 53, 57, 61, 32, 36, 40, 56, 36, 37, 41, 57, 40, 41, 42, 58, 56, 57, 58, 62, 48, 52, 56, 60, 52, 53, 57, 61, 56, 57, 58, 62, 60, 61, 62, 63, 64, 80, 144, 208, 80, 84]

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