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.

A068951 Scan the primes, record digit-sum if it is itself prime.

Table of values

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

List of values

[2, 3, 5, 7, 2, 5, 11, 5, 7, 11, 7, 13, 11, 17, 2, 5, 5, 11, 13, 7, 13, 11, 17, 11, 13, 17, 19, 7, 11, 13, 7, 11, 17, 11, 13, 5, 7, 11, 7, 13, 11, 17, 13, 19, 19, 5, 13, 7, 11, 17, 11, 13, 17, 19, 17, 13, 19, 17, 23, 7, 13, 11, 13, 17, 13, 17, 17, 13, 19, 13, 19, 17, 23, 17, 11, 13]

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

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