Hybrid $d$-ary trees and their generalization
Bull. Korean Math. Soc. 2014 Vol. 51, No. 1, 229-235
Printed January 1, 2014
SeoungJi Hong and SeungKyung Park
Yonsei University, Yonsei University
Abstract : We enumerate black and white colored $d$-ary trees with no leftmost \mbox{\LeftBBEDGE}$\,\,$-edges, which is a generalization of hybrid binary trees. Then the multi-colored hybrid $d$-ary trees with the same condition is studied.
Keywords : enumeration, generating function, hybrid tree
MSC numbers : 05A15
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