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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.

A330231 Number of distinct set-systems that can be obtained by permuting the vertices of the set-system with BII-number n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 2
7 1
8 1
9 1
10 1
11 1
12 3
13 6
14 6
15 3
16 1
17 2
18 3
19 6
20 3
21 3
22 6
23 6
24 2
25 1
26 6
27 3
28 6
29 6
30 3
31 3
32 1
33 3
34 2
35 6
36 3
37 6
38 3
39 6
40 2
41 6
42 1
43 3
44 6
45 3
46 6
47 3
48 3
49 6
50 6
51 3
52 1
53 3
54 3
55 3
56 3
57 6
58 6
59 3
60 3
61 3
62 3
63 1
64 1
65 3
66 3
67 3
68 3
69 6
70 6
71 3
72 3
73 3
74 3
75 1
76 3
77 6
78 6
79 3
80 3
81 6
82 3
83 6
84 3
85 3
86 6

List of values

[1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 3, 6, 6, 3, 1, 2, 3, 6, 3, 3, 6, 6, 2, 1, 6, 3, 6, 6, 3, 3, 1, 3, 2, 6, 3, 6, 3, 6, 2, 6, 1, 3, 6, 3, 6, 3, 3, 6, 6, 3, 1, 3, 3, 3, 3, 6, 6, 3, 3, 3, 3, 1, 1, 3, 3, 3, 3, 6, 6, 3, 3, 3, 3, 1, 3, 6, 6, 3, 3, 6, 3, 6, 3, 3, 6]