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.

A369288 Array read by antidiagonals: A(n,k) = the hypergraph Catalan number C_k(n), n >= 0, k >= 1.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 1
7 1
8 6
9 5
10 1
11 1
12 20
13 57
14 14
15 1
16 1
17 70
18 860
19 678
20 42
21 1
22 1
23 252
24 15225
25 57200
26 9270
27 132
28 1
29 1
30 924
31 299880
32 7043750
33 5344800
34 139968
35 429
36 1
37 1
38 3432
39 6358044
40 1112865264
41 6327749750
42 682612800
43 2285073
44 1430
45 1
46 1
47 12870
48 141858288
49 203356067376
50 11126161436292
51 10411817136000
52 118180104000
53 39871926
54 4862

List of values

[1, 1, 1, 1, 1, 2, 1, 1, 6, 5, 1, 1, 20, 57, 14, 1, 1, 70, 860, 678, 42, 1, 1, 252, 15225, 57200, 9270, 132, 1, 1, 924, 299880, 7043750, 5344800, 139968, 429, 1, 1, 3432, 6358044, 1112865264, 6327749750, 682612800, 2285073, 1430, 1, 1, 12870, 141858288, 203356067376, 11126161436292, 10411817136000, 118180104000, 39871926, 4862]