%I A037843
%S A037843 2,3,7,39,2551,22928343,6641112790058484007
%N A037843 Number of matrices with n columns whose rows do not cover each other; 
               ordered antichains of subsets of an n-set.
%D A037843 V. Jovovic and G. Kilibarda, On the number of Boolean functions in the 
               Post classes F^{mu}_8, Diskretnaya Matematika, 11 (1999), no. 4, 
               127-138 (translated in Discrete Mathematics and Applications, 9, 
               (1999), no. 6)
%D A037843 V. Jovovic, G. Kilibarda, On enumeration of the class of all monotone 
               Boolean functions, in preparation.
%H A037843 K. S. Brown, <a href="http://www.mathpages.com/home/kmath515.htm">Dedekind's 
               problem</a>
%H A037843 <a href="Sindx_Bo.html#Boolean">Index entries for sequences related to 
               Boolean functions</a>
%F A037843 a(n)=Sum_{k=0..C(n, floor(n/2))}k!*M(n, k) where M(n, k) is the number 
               of distinct monotone Boolean functions of n variables with k mincuts.
%Y A037843 Cf. A003182, A051112-A051117, A007411, A006602.
%Y A037843 Sequence in context: A079388 A000317 A047024 this_sequence A102604 A119662 
               A163157
%Y A037843 Adjacent sequences: A037840 A037841 A037842 this_sequence A037844 A037845 
               A037846
%K A037843 hard,nonn
%O A037843 0,1
%A A037843 Vladeta Jovovic, Goran Kilibarda (vladeta(AT)eunet.rs), Jul 23 2000