4840960domain: NAppears in sequencesGeneralized Catalan numbers C(2,2; n).at n=8A064340Generalized Catalan triangle, based on C(2,2; n) = A064340(n).at n=36A067298Generalized Catalan triangle A067298 with row reversion.at n=44A067304Scaled triangle A067327.at n=36A067328Scaled triangle A067327.at n=37A067328