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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.

A239690 Base 4 sum of digits of prime(n).

Table of values

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

List of values

[2, 3, 2, 4, 5, 4, 2, 4, 5, 5, 7, 4, 5, 7, 8, 5, 8, 7, 4, 5, 4, 7, 5, 5, 4, 5, 7, 8, 7, 5, 10, 5, 5, 7, 5, 7, 7, 7, 8, 8, 8, 7, 11, 4, 5, 7, 7, 10, 8, 7, 8, 11, 7, 11, 2, 5, 5, 7, 4, 5, 7, 5, 7, 8, 7, 8, 7, 4, 8, 7, 5, 8, 10, 7, 10, 11, 5, 7, 5, 7, 8, 7, 11, 7]

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