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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.

A326704 BII-numbers of antichains of nonempty sets.

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 8
7 9
8 10
9 11
10 12
11 16
12 18
13 20
14 32
15 33
16 36
17 48
18 52
19 64
20 128
21 129
22 130
23 131
24 132
25 136
26 137
27 138
28 139
29 140
30 144
31 146
32 148
33 160
34 161
35 164
36 176
37 180
38 192
39 256
40 258
41 260
42 264
43 266
44 268
45 272
46 274
47 276
48 288
49 292
50 304
51 308
52 320
53 512
54 513
55 516
56 520
57 521
58 524

List of values

[0, 1, 2, 3, 4, 8, 9, 10, 11, 12, 16, 18, 20, 32, 33, 36, 48, 52, 64, 128, 129, 130, 131, 132, 136, 137, 138, 139, 140, 144, 146, 148, 160, 161, 164, 176, 180, 192, 256, 258, 260, 264, 266, 268, 272, 274, 276, 288, 292, 304, 308, 320, 512, 513, 516, 520, 521, 524]