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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.

A079183 Number of isomorphism classes of non-commutative closed binary operations (groupoids) on a set of order n.

Table of values

n a(n)
1 0
2 6
3 3201
4 178937984
5 2483527282664925
6 14325590003288422852104768
7 50976900301814583996024242298024434780
8 155682086691137947272042494203068030678979503481450216

List of values

[0, 6, 3201, 178937984, 2483527282664925, 14325590003288422852104768, 50976900301814583996024242298024434780, 155682086691137947272042494203068030678979503481450216]

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

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