86731domain: NAppears in sequencesNumber of binary phylogenetic trees with n labels.at n=6A006681Strong pseudoprimes to base 79.at n=36A020305Number of matchings in graph C_{3} X P_{n}.at n=6A033515Array read by antidiagonals: T(m,n) is the number of matchings in the stacked prism graph C_m X P_n.at n=30A287428