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.

A263563 A self-describing sequence: when the sequence is read as a string of decimal digits, a(n) can be read from position n (ignoring leading zeros). This sequence is the lexicographically earliest sequence of distinct terms with this property.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 110
13 100
14 12
15 120
16 1200
17 20
18 13
19 130
20 1300
21 30
22 14
23 140
24 1400
25 40
26 15
27 150
28 1500
29 50
30 16
31 160
32 1600
33 60
34 17
35 170
36 1700
37 70
38 18
39 180
40 1800
41 80
42 19
43 190
44 1900
45 90
46 21
47 210
48 2100
49 1000
50 22
51 220
52 2200
53 22000
54 200
55 23
56 230
57 2300

List of values

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 110, 100, 12, 120, 1200, 20, 13, 130, 1300, 30, 14, 140, 1400, 40, 15, 150, 1500, 50, 16, 160, 1600, 60, 17, 170, 1700, 70, 18, 180, 1800, 80, 19, 190, 1900, 90, 21, 210, 2100, 1000, 22, 220, 2200, 22000, 200, 23, 230, 2300]