921456domain: NAppears in sequencesGeneralized Catalan numbers C(3,3; n).at n=6A064341Triangle of numbers composed of certain generalized Catalan numbers.at n=48A064879Number of n X 5 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=26A207450