cp's OEIS Frontend

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.

A059048 Triangle A(n,m) of numbers of n-element ordered T_0-antichains on an unlabeled m-set or numbers of T_1-hypergraphs on n labeled nodes with m (not necessarily empty) distinct hyperedges (m=0,1,...,2^n).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 1
5 0
6 0
7 1
8 2
9 1
10 0
11 0
12 0
13 2
14 13
15 26
16 22
17 8
18 1
19 0
20 0
21 0
22 0
23 25
24 354
25 1798
26 4822
27 8028
28 9044
29 7240
30 4224
31 1808
32 560
33 120
34 16
35 1
36 0
37 0
38 0
39 0
40 30
41 2086
42 45512
43 461236
44 2797785
45 11669660
46 36369970
47 89356260
48 179461250
49 302225100
50 43458923
51 0

List of values

[1, 1, 1, 2, 1, 0, 0, 1, 2, 1, 0, 0, 0, 2, 13, 26, 22, 8, 1, 0, 0, 0, 0, 25, 354, 1798, 4822, 8028, 9044, 7240, 4224, 1808, 560, 120, 16, 1, 0, 0, 0, 0, 30, 2086, 45512, 461236, 2797785, 11669660, 36369970, 89356260, 179461250, 302225100, 43458923, 0]