%I #17 Nov 06 2014 08:48:28
%S 3,10,45,270,1737,13280,121500,1231200,12994020,151817274,2041564500,
%T 29351808000,448218360000,7027147872000,118449530725500,
%U 2207253791691000,43402342378752000,889018706142000000,19030271359352400000
%N Size of complete unitary aperiodic semigroup with n states.
%D J. Brzozowski, M. Szykuła. Large Aperiodic Semigroups. In Implementation and Application of Automata, volume 8587 of LNCS, pages 124-135, 2014
%H Marek Szykuła, <a href="/A236409/b236409.txt">Table of n, a(n) for n = 2..1000</a>
%H J. Brzozowski, M. Szykuła, <a href="http://arxiv.org/abs/1401.0157">Large Aperiodic Semigroups</a>, arXiv preprint arXiv:1401.0157, 2013
%K nonn
%O 2,1
%A _N. J. A. Sloane_, Jan 31 2014
%E More terms, corrected and extended by _Marek Szykula_, Nov 03 2014