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A253949 Number of finite, negative, Archimedean, totally ordered monoids of size n (semi-groups with a neutral element that is also the top element). 2
1, 1, 1, 2, 8, 44, 333, 3543, 54954, 1297705 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

M. Petrík and T. Vetterlein. The elementary extensions of finite, negative tomonoids. Submitted.

LINKS

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

M. Petrík and T. Vetterlein, Program code in Python and other information

M. Petrík and T. Vetterlein, The elementary extensions of finite, negative tomonoids, Preprint from 2014.

M. Petrík and T. Vetterlein, Algorithm to generate the Archimedean, finite, negative tomonoids, Preprint from 2014.

M. Petrík and T. Vetterlein, Algorithm to generate the Archimedean, finite, negative tomonoids, In Joint 7th International Conference on Soft Computing and Intelligent Systems and 15th International Symposium on Advanced Intelligent Systems, pages 42-47, Kitakyushu, Japan, December 2014.

Index entries for sequences related to monoids

CROSSREFS

Cf. A058129, A030453, A253948, A253950.

Sequence in context: A293905 A244430 A190818 * A126101 A157994 A002500

Adjacent sequences:  A253946 A253947 A253948 * A253950 A253951 A253952

KEYWORD

hard,nonn

AUTHOR

Milan Petrík, Jan 20 2015

STATUS

approved

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Last modified May 20 12:33 EDT 2019. Contains 323422 sequences. (Running on oeis4.)