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.

A104209 Number of labeled directed multigraphs with n arrows and no vertex of degree 0.

Table of values

n a(n)
0 1
1 3
2 39
3 819
4 23949
5 898947
6 41212155
7 2232057171
8 139455901101
9 9873341493231
10 781184921112075
11 68309191570851759
12 6541702440222052137
13 680922615974259589527
14 76544749927261960908807
15 9241807764375868372683255
16 1192762017796744530286451865

List of values

[1, 3, 39, 819, 23949, 898947, 41212155, 2232057171, 139455901101, 9873341493231, 781184921112075, 68309191570851759, 6541702440222052137, 680922615974259589527, 76544749927261960908807, 9241807764375868372683255, 1192762017796744530286451865]

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

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