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.

A342982 Triangle read by rows: T(n,k) is the number of tree-rooted planar maps with n edges and k+1 faces, n >= 0, k = 0..n.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 6
5 2
6 5
7 30
8 30
9 5
10 14
11 140
12 280
13 140
14 14
15 42
16 630
17 2100
18 2100
19 630
20 42
21 132
22 2772
23 13860
24 23100
25 13860
26 2772
27 132
28 429
29 12012
30 84084
31 210210
32 210210
33 84084
34 12012
35 429
36 1430
37 51480
38 480480
39 1681680
40 2522520
41 1681680
42 480480
43 51480
44 1430

List of values

[1, 1, 1, 2, 6, 2, 5, 30, 30, 5, 14, 140, 280, 140, 14, 42, 630, 2100, 2100, 630, 42, 132, 2772, 13860, 23100, 13860, 2772, 132, 429, 12012, 84084, 210210, 210210, 84084, 12012, 429, 1430, 51480, 480480, 1681680, 2522520, 1681680, 480480, 51480, 1430]