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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.

A191322 Number of bases in which both n and the reversal of n are 3-digit numbers.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 1
6 1
7 1
8 0
9 1
10 0
11 1
12 1
13 0
14 0
15 0
16 1
17 0
18 0
19 0
20 0
21 1
22 2
23 1
24 1
25 2
26 2
27 1
28 1
29 2
30 0
31 0
32 1
33 2
34 2
35 2
36 3
37 2
38 2
39 2
40 0
41 0
42 1
43 2
44 3
45 3
46 2
47 2
48 2
49 3
50 0
51 1
52 2
53 2
54 3
55 4
56 2
57 3
58 3
59 3
60 0
61 1
62 2
63 3
64 2
65 2
66 4
67 4
68 4
69 4
70 0
71 0
72 1
73 2
74 2
75 1
76 4
77 4
78 4
79 4
80 0
81 0
82 1

List of values

[0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 2, 1, 1, 2, 2, 1, 1, 2, 0, 0, 1, 2, 2, 2, 3, 2, 2, 2, 0, 0, 1, 2, 3, 3, 2, 2, 2, 3, 0, 1, 2, 2, 3, 4, 2, 3, 3, 3, 0, 1, 2, 3, 2, 2, 4, 4, 4, 4, 0, 0, 1, 2, 2, 1, 4, 4, 4, 4, 0, 0, 1]

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