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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.

A086366 Number of labeled n-node digraphs in which every node belongs to a directed cycle.

Table of values

n a(n)
0 1
1 0
2 1
3 18
4 1699
5 587940
6 750744901
7 3556390155318
8 63740128872703879
9 4405426607409460017480
10 1190852520892329350092354441
11 1270598627613805616203391468226138
12 5381238039128882594932248239301142751179
13 90766634183072089515270648224715368261615375340

List of values

[1, 0, 1, 18, 1699, 587940, 750744901, 3556390155318, 63740128872703879, 4405426607409460017480, 1190852520892329350092354441, 1270598627613805616203391468226138, 5381238039128882594932248239301142751179, 90766634183072089515270648224715368261615375340]

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

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