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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.

A174257 Number of symmetry classes of 3 X 3 reduced magic squares with distinct values and maximum value 2n; also, with magic sum 3n.

Table of values

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

List of values

[0, 0, 0, 1, 2, 1, 3, 3, 3, 4, 5, 4, 6, 6, 6, 7, 8, 7, 9, 9, 9, 10, 11, 10, 12, 12, 12, 13, 14, 13, 15, 15, 15, 16, 17, 16, 18, 18, 18, 19, 20, 19, 21, 21, 21, 22, 23, 22, 24, 24, 24, 25, 26, 25, 27, 27, 27, 28, 29, 28, 30, 30, 30, 31, 32, 31, 33, 33, 33, 34, 35, 34, 36, 36, 36, 37]

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