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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.

A137180 Number of palindromes in the range [1,n] inclusive.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 9
11 10
12 10
13 10
14 10
15 10
16 10
17 10
18 10
19 10
20 10
21 10
22 11
23 11
24 11
25 11
26 11
27 11
28 11
29 11
30 11
31 11
32 11
33 12
34 12
35 12
36 12
37 12
38 12
39 12
40 12
41 12
42 12
43 12
44 13
45 13
46 13
47 13
48 13
49 13
50 13
51 13
52 13
53 13
54 13
55 14
56 14
57 14
58 14
59 14
60 14
61 14
62 14
63 14
64 14
65 14
66 15
67 15
68 15
69 15
70 15
71 15
72 15
73 15
74 15

List of values

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15]

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