61951251333domain: NAppears in sequencesAntichains (or order ideals) in the poset 2*2*6*n or size of the distributive lattice J(2*2*6*n).at n=7A056933Antichains (or order ideals) in the poset 2*2*7*n or size of the distributive lattice J(2*2*7*n).at n=6A056934