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A236409 Size of complete unitary aperiodic semigroup with n states. 1
3, 10, 45, 270, 1737, 13280, 121500, 1231200, 12994020, 151817274, 2041564500, 29351808000, 448218360000, 7027147872000, 118449530725500, 2207253791691000, 43402342378752000, 889018706142000000, 19030271359352400000 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

REFERENCES

J. Brzozowski, M. Szykuła. Large Aperiodic Semigroups. In Implementation and Application of Automata, volume 8587 of LNCS, pages 124-135, 2014

LINKS

Marek Szykuła, Table of n, a(n) for n = 2..1000

J. Brzozowski, M. Szykuła, Large Aperiodic Semigroups, arXiv preprint arXiv:1401.0157, 2013

CROSSREFS

Sequence in context: A268224 A003704 A292181 * A000250 A118601 A005143

Adjacent sequences:  A236406 A236407 A236408 * A236410 A236411 A236412

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 31 2014

EXTENSIONS

More terms, corrected and extended by Marek Szykula, Nov 03 2014

STATUS

approved

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Last modified October 23 21:57 EDT 2019. Contains 328373 sequences. (Running on oeis4.)