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.

A380110 In the base 4 expansion of n: map 0->0, 1->1, 2->1, 3->2.

Table of values

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

List of values

[0, 1, 1, 2, 4, 5, 5, 6, 4, 5, 5, 6, 8, 9, 9, 10, 16, 17, 17, 18, 20, 21, 21, 22, 20, 21, 21, 22, 24, 25, 25, 26, 16, 17, 17, 18, 20, 21, 21, 22, 20, 21, 21, 22, 24, 25, 25, 26, 32, 33, 33, 34, 36, 37, 37, 38, 36, 37, 37, 38, 40, 41, 41, 42, 64, 65, 65, 66, 68, 69]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.