130007500domain: NAppears in sequencesa(n) = (n+1)*binomial(n+1,12).at n=13A027772a(n) = (n+1)*binomial(n+1,13).at n=12A027773Number of turns in all left factors of Dyck paths of length n.at n=26A191527Number of profiles in domino tiling of a 2*n checkboard.at n=25A218073a(n) = (2n+1)^2*Catalan(n).at n=12A257589