A tree (also called a central tree) having a single node that is a graph center. The numbers of centered trees
on 
, 2, ... nodes are 1, 0, 1, 1, 2, 3,
7, 12, 27, 55, 127, 284, 682, 1618, ... (OEIS A000676).
Centered Tree
See also
Bicentered Tree, Graph Center, TreeExplore with Wolfram|Alpha
References
Biggs, N. L.; Lloyd, E. K.; and Wilson, R. J. Graph Theory 1736-1936. Oxford, England: Oxford University Press, p. 49, 1976.Cayley, A. "On the Analytical Forms Called Trees, with Application to the Theory of Chemical Combinations." Reports Brit. Assoc. Advance. Sci. 45, 237-305, 1875. Reprinted in The Collected Mathematical Papers of Arthur Cayley, Vol. 9. Cambridge: Cambridge University Press, pp. 427-460, 1896.Sloane, N. J. A. Sequence A000676/M0831 in "The On-Line Encyclopedia of Integer Sequences."Referenced on Wolfram|Alpha
Centered TreeCite this as:
Weisstein, Eric W. "Centered Tree." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CenteredTree.html