Leaves of Ordered Trees: 10757

Mark E. Kidwell, Donald E. Knuth, O. P. Lossers. Leaves of Ordered Trees: 10757. The American Mathematical Monthly, 108(9):874-875, 2001. [doi]

@article{KidwellKL01,
  title = {Leaves of Ordered Trees: 10757},
  author = {Mark E. Kidwell and Donald E. Knuth and O. P. Lossers},
  year = {2001},
  url = {http://www.jstor.org/stable/2695570},
  researchr = {https://researchr.org/publication/KidwellKL01},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {108},
  number = {9},
  pages = {874-875},
}