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.

A030373 Write n in base 4 and juxtapose.

Table of values

n a(n)
1 1
2 2
3 3
4 1
5 0
6 1
7 1
8 1
9 2
10 1
11 3
12 2
13 0
14 2
15 1
16 2
17 2
18 2
19 3
20 3
21 0
22 3
23 1
24 3
25 2
26 3
27 3
28 1
29 0
30 0
31 1
32 0
33 1
34 1
35 0
36 2
37 1
38 0
39 3
40 1
41 1
42 0
43 1
44 1
45 1
46 1
47 1
48 2
49 1
50 1
51 3
52 1
53 2
54 0
55 1
56 2
57 1
58 1
59 2
60 2
61 1
62 2
63 3
64 1
65 3
66 0
67 1
68 3
69 1
70 1
71 3
72 2
73 1
74 3
75 3
76 2
77 0
78 0
79 2
80 0
81 1
82 2
83 0
84 2
85 2
86 0
87 3
88 2
89 1
90 0

List of values

[1, 2, 3, 1, 0, 1, 1, 1, 2, 1, 3, 2, 0, 2, 1, 2, 2, 2, 3, 3, 0, 3, 1, 3, 2, 3, 3, 1, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 2, 0, 1, 2, 1, 1, 2, 2, 1, 2, 3, 1, 3, 0, 1, 3, 1, 1, 3, 2, 1, 3, 3, 2, 0, 0, 2, 0, 1, 2, 0, 2, 2, 0, 3, 2, 1, 0]