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.

A114315 Self-describing sequence. See the sequence as a succession of digits: then a(n) is the position of a prime digit in the sequence.

Table of values

n a(n)
1 4
2 6
3 8
4 20
5 21
6 24
7 40
8 41
9 44
10 46
11 48
12 52
13 60
14 70
15 80
16 81
17 84
18 86
19 88
20 90
21 102
22 204
23 305
24 476
25 485
26 600
27 649
28 650
29 660
30 664
31 667
32 669
33 686
34 698
35 720
36 934
37 2030
38 2040
39 4100
40 4680
41 5000
42 6010
43 6011
44 6014
45 6016
46 6018
47 6040
48 6044
49 6046
50 6048
51 6060

List of values

[4, 6, 8, 20, 21, 24, 40, 41, 44, 46, 48, 52, 60, 70, 80, 81, 84, 86, 88, 90, 102, 204, 305, 476, 485, 600, 649, 650, 660, 664, 667, 669, 686, 698, 720, 934, 2030, 2040, 4100, 4680, 5000, 6010, 6011, 6014, 6016, 6018, 6040, 6044, 6046, 6048, 6060]