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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.

A257773 Number of numbers k, 0 <= k <= 9, such that n is a Belgian-k number.

Table of values

n a(n)
0 1
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 10
11 10
12 7
13 6
14 4
15 4
16 4
17 4
18 3
19 2
20 5
21 7
22 5
23 4
24 3
25 3
26 3
27 3
28 2
29 2
30 4
31 5
32 4
33 4
34 2
35 3
36 3
37 2
38 2
39 2
40 3
41 4
42 4
43 3
44 3
45 3
46 2
47 1
48 2
49 1
50 2
51 3
52 2
53 3
54 3
55 2
56 2
57 2
58 2
59 1
60 2
61 2
62 3
63 3
64 2
65 1
66 2
67 2
68 1
69 2
70 2
71 3
72 3
73 2
74 2
75 2
76 1
77 2
78 1
79 1
80 2
81 3
82 2
83 2
84 2
85 1

List of values

[1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 10, 10, 7, 6, 4, 4, 4, 4, 3, 2, 5, 7, 5, 4, 3, 3, 3, 3, 2, 2, 4, 5, 4, 4, 2, 3, 3, 2, 2, 2, 3, 4, 4, 3, 3, 3, 2, 1, 2, 1, 2, 3, 2, 3, 3, 2, 2, 2, 2, 1, 2, 2, 3, 3, 2, 1, 2, 2, 1, 2, 2, 3, 3, 2, 2, 2, 1, 2, 1, 1, 2, 3, 2, 2, 2, 1]

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