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.

A224068 Number of labeled graphs on n vertices that can be colored using exactly 4 colors.

Table of values

n a(n)
1 0
2 0
3 0
4 1536
5 122880
6 10813440
7 1348730880
8 261070258176
9 81787921367040
10 42364317235937280
11 36686317873382031360
12 53408511909378681470976
13 131046345314766385022238720
14 542471805171085602081503969280
15 3789399960645715708906355231293440

List of values

[0, 0, 0, 1536, 122880, 10813440, 1348730880, 261070258176, 81787921367040, 42364317235937280, 36686317873382031360, 53408511909378681470976, 131046345314766385022238720, 542471805171085602081503969280, 3789399960645715708906355231293440]

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

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