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.

A006468 Number of rooted planar maps with 4 faces and n vertices and no isthmuses.

Table of values

n a(n)
1 5
2 37
3 150
4 449
5 1113
6 2422
7 4788
8 8790
9 15213
10 25091
11 39754
12 60879
13 90545
14 131292
15 186184
16 258876
17 353685
18 475665
19 630686
20 825517
21 1067913
22 1366706
23 1731900
24 2174770
25 2707965
26 3345615
27 4103442
28 4998875
29 6051169
30 7281528
31 8713232
32 10371768
33 12284965
34 14483133
35 16999206

List of values

[5, 37, 150, 449, 1113, 2422, 4788, 8790, 15213, 25091, 39754, 60879, 90545, 131292, 186184, 258876, 353685, 475665, 630686, 825517, 1067913, 1366706, 1731900, 2174770, 2707965, 3345615, 4103442, 4998875, 6051169, 7281528, 8713232, 10371768, 12284965, 14483133, 16999206]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.