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.

A199012 The total number of edges in all unlabeled directed graphs (no self loops allowed) on n nodes.

Table of values

n a(n)
1 0
2 3
3 48
4 1308
5 96080
6 23114160
7 18522702240
8 50214057399744
9 469006445678383872
10 15356719437883766115840
11 1788760016178073736115859200
12 750205198434476437912637004278784
13 1144188684031608529784893493874665232384
14 6398724751986384956446081096594171272300830720

List of values

[0, 3, 48, 1308, 96080, 23114160, 18522702240, 50214057399744, 469006445678383872, 15356719437883766115840, 1788760016178073736115859200, 750205198434476437912637004278784, 1144188684031608529784893493874665232384, 6398724751986384956446081096594171272300830720]

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

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