Louis W. Shapiro, Richard Ehrenborg, John W. Moon, Michael Reid. Leaves of Ordered Trees: 10753. The American Mathematical Monthly, 108(9):873-874, 2001. [doi]
@article{ShapiroEMR01,
title = {Leaves of Ordered Trees: 10753},
author = {Louis W. Shapiro and Richard Ehrenborg and John W. Moon and Michael Reid},
year = {2001},
url = {http://www.jstor.org/stable/2695569},
researchr = {https://researchr.org/publication/ShapiroEMR01},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {108},
number = {9},
pages = {873-874},
}