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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.

A308239 Number of isomorphism classes of connected Eulerian oriented graphs with n vertices.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 4
6 16
7 175
8 5274
9 434017
10 90658149
11 48825116761
12 68579602126387
13 254236892409251687
14 2512196983110257299898
15 66738846701458593981832314
16 4802164152196181961357340585741
17 942009012794429918939576183310877477
18 506665422212653541096106256584713063500057

List of values

[1, 1, 0, 1, 1, 4, 16, 175, 5274, 434017, 90658149, 48825116761, 68579602126387, 254236892409251687, 2512196983110257299898, 66738846701458593981832314, 4802164152196181961357340585741, 942009012794429918939576183310877477, 506665422212653541096106256584713063500057]

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

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