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.

A380241 Array read by antidiagonals: T(n,k) is the number of rooted (2k)-regular planar maps with n vertices, n >= 0, k >= 0.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 1
9 1
10 1
11 5
12 9
13 1
14 1
15 1
16 14
17 100
18 54
19 1
20 1
21 1
22 42
23 1225
24 3000
25 378
26 1
27 1
28 1
29 132
30 15876
31 171500
32 110000
33 2916
34 1
35 1
36 1
37 429
38 213444
39 10001880
40 30012500
41 4550000
42 24057
43 1
44 1
45 1
46 1430
47 2944656
48 591666768
49 7981500240
50 5987493750
51 204000000
52 208494
53 1
54 1

List of values

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 5, 9, 1, 1, 1, 14, 100, 54, 1, 1, 1, 42, 1225, 3000, 378, 1, 1, 1, 132, 15876, 171500, 110000, 2916, 1, 1, 1, 429, 213444, 10001880, 30012500, 4550000, 24057, 1, 1, 1, 1430, 2944656, 591666768, 7981500240, 5987493750, 204000000, 208494, 1, 1]