4211628008domain: NAppears in sequencesCentral coefficients T(2n,n) of the Catalan triangle A033184.at n=13A174687Number of North-East lattice paths from (0,0) to (n,n) that cross the diagonal y = x horizontally exactly three times.at n=13A268446Number of Young tableaux of shape [n, floor(n/2)].at n=26A368567