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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.

A239695 Base 9 sum of digits of prime(n).

Table of values

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

List of values

[2, 3, 5, 7, 3, 5, 9, 3, 7, 5, 7, 5, 9, 11, 7, 13, 11, 13, 11, 15, 9, 15, 3, 9, 9, 5, 7, 11, 5, 9, 7, 11, 9, 11, 13, 15, 13, 3, 7, 5, 11, 5, 7, 9, 13, 7, 11, 15, 11, 13, 17, 15, 17, 11, 9, 7, 13, 7, 13, 9, 11, 13, 11, 15, 17, 13, 11, 9, 11, 13, 9, 15, 15, 13, 11]

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

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