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.

A053598 Number of n-node unlabeled digraphs without isolated nodes.

Table of values

n a(n)
0 1
1 0
2 2
3 13
4 202
5 9390
6 1531336
7 880492496
8 1792477159408
9 13026163465206704
10 341247403996148180800
11 32522568124623933138617088
12 11366712907916015518547782806784
13 14669074325967499043636521641422216704
14 70315641946149306808455637518883828774996992

List of values

[1, 0, 2, 13, 202, 9390, 1531336, 880492496, 1792477159408, 13026163465206704, 341247403996148180800, 32522568124623933138617088, 11366712907916015518547782806784, 14669074325967499043636521641422216704, 70315641946149306808455637518883828774996992]

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

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