|
|
A079265
|
|
Number of antisymmetric transitive binary relations on n unlabeled points.
|
|
5
|
|
|
1, 2, 7, 32, 192, 1490, 15067, 198296, 3398105, 75734592, 2191591226, 82178300654, 3984499220967, 249298391641352, 20089200308020179, 2081351202770089728
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
Also, number of unconstrained mixed models with n factors.
|
|
REFERENCES
|
A. Hess and H. Iyer, Enumeration of mixed linear models and SAS macro for computation of confidence intervals for variance components, presented at Applied Statistics in Agriculture Conference at Kansas State University 2001.
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,hard,nice
|
|
AUTHOR
|
|
|
EXTENSIONS
|
a(10)-a(12) and new description from Goetz Pfeiffer (goetz.pfeiffer(AT)nuigalway.ie), Jan 21 2004
a(13)-a(15) from Brinkmann's and McKay's paper by Vladeta Jovovic, Jan 04 2006
|
|
STATUS
|
approved
|
|
|
|