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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.

A380374 Number of ways to topologically sort the strong components of a labeled digraph on [n].

Table of values

n a(n)
0 1
1 1
2 5
3 90
4 5542
5 1252120
6 1152382456
7 4491243320144
8 72454914124818352
9 4729326805677997351296
10 1238455260161143286333919616
11 1298230864749797963009864293455616
12 5444709289384095954326434486307506566400
13 91344784292457849099764110418297773249212062720

List of values

[1, 1, 5, 90, 5542, 1252120, 1152382456, 4491243320144, 72454914124818352, 4729326805677997351296, 1238455260161143286333919616, 1298230864749797963009864293455616, 5444709289384095954326434486307506566400, 91344784292457849099764110418297773249212062720]

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

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