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.

A020561 Number of ordered oriented multigraphs on n labeled arcs (with loops).

Table of values

n a(n)
0 1
1 2
2 17
3 252
4 5535
5 165278
6 6355147
7 303080956
8 17440307953
9 1185613611362
10 93640428880873
11 8476453909912332
12 869565923845396207
13 100138764123162257470
14 12840593975018953569971
15 1820531766301308581051116
16 283643668353734597645391393

List of values

[1, 2, 17, 252, 5535, 165278, 6355147, 303080956, 17440307953, 1185613611362, 93640428880873, 8476453909912332, 869565923845396207, 100138764123162257470, 12840593975018953569971, 1820531766301308581051116, 283643668353734597645391393]

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

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