Emeric Deutsch, Wen-Jin Woan. Special Motzkin Paths: 10816. The American Mathematical Monthly, 109(5):478-479, 2002. [doi]
@article{DeutschW02, title = {Special Motzkin Paths: 10816}, author = {Emeric Deutsch and Wen-Jin Woan}, year = {2002}, url = {http://www.jstor.org/stable/2695661}, researchr = {https://researchr.org/publication/DeutschW02}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {109}, number = {5}, pages = {478-479}, }