central tree

A tree (also called a central tree) having a single node that is a graph center. The numbers of centered trees on n = 1, 2, ... nodes are 1, 0, 1, 1, 2, 3, 7, 12, 27, 55, 127, 284, 682, 1618, ... (OEIS A000676).

bicentered tree | graph center | tree