We study combinatorial identities on multinomial coefficients. In particular, we present several new ways to count the connected labeled graphs using multinomial coefficients.
"Combinatorial Identities on Multinomial Coefficients and Graph Theory,"
Rose-Hulman Undergraduate Mathematics Journal: Vol. 20:
2, Article 1.
Available at: https://scholar.rose-hulman.edu/rhumj/vol20/iss2/1