84733domain: NAppears in sequencesNumerical equivalents of the words zero, one, two, three, ... on touch-tone telephone.at n=3A079048Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,1 3,2 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155379