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.

A342981 Triangle read by rows: T(n,k) is the number of rooted planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 2
6 0
7 1
8 7
9 5
10 0
11 1
12 16
13 37
14 14
15 0
16 1
17 30
18 150
19 176
20 42
21 0
22 1
23 50
24 449
25 1104
26 794
27 132
28 0
29 1
30 77
31 1113
32 4795
33 7077
34 3473
35 429
36 0
37 1
38 112
39 2422
40 16456
41 41850
42 41504
43 14893
44 1430
45 0
46 1
47 156
48 4788
49 47832
50 189183
51 319320
52 228810
53 63004
54 4862

List of values

[1, 0, 1, 0, 1, 2, 0, 1, 7, 5, 0, 1, 16, 37, 14, 0, 1, 30, 150, 176, 42, 0, 1, 50, 449, 1104, 794, 132, 0, 1, 77, 1113, 4795, 7077, 3473, 429, 0, 1, 112, 2422, 16456, 41850, 41504, 14893, 1430, 0, 1, 156, 4788, 47832, 189183, 319320, 228810, 63004, 4862]