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.

A127909 Number of different digraphs on n unlabeled nodes which are not graphs.

Table of values

n a(n)
0 0
1 0
2 1
3 12
4 207
5 9574
6 1540788
7 882032396
8 1793359180502
9 13027956824124884
10 341260431952960575184
11 32522909385055885092199576
12 11366745430825400574268802831632
13 14669085692712929869037045573284852976
14 70315656615234999521385506526925748433982432

List of values

[0, 0, 1, 12, 207, 9574, 1540788, 882032396, 1793359180502, 13027956824124884, 341260431952960575184, 32522909385055885092199576, 11366745430825400574268802831632, 14669085692712929869037045573284852976, 70315656615234999521385506526925748433982432]

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

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