OFFSET
1,2
COMMENTS
Total number of levels in a multi-hierarchy society with n members.
LINKS
N. J. A. Sloane and Thomas Wieder, The Number of Hierarchical Orderings, Order 21 (2004), 83-89.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Thomas Wieder, Jun 24 2003
EXTENSIONS
More terms from Vladeta Jovovic, Jun 24 2003
STATUS
approved