A346413 Number of labeled totally ordered monoids with n elements.

1, 2, 8, 34, 184, 1218, 9742, 92882, 1053248, 14592054

Offset

1,2

Comments

The terms have been computed using the algorithm described in the referenced paper.

Links

Table of n, a(n) for n=1..10.

Petr Gajdoš and Martin Kuřil, Ordered semigroups of size at most 7 and linearly ordered semigroups of size at most 10, Semigroup Forum, 89 (2014), 639-663.

Crossrefs

Cf. A058153.

Sequence in context: A268558 A191569 A229812 * A013026 A121789 A057900

Adjacent sequences: A346410 A346411 A346412 * A346414 A346415 A346416

Keyword

nonn,hard,more

Author

Bianca Newell, Jul 15 2021

Status

approved