22946779domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 5,2 6,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=11A155400Prime numbersat n=1445090