517884748domain: NAppears in sequencesNumber of Dyck paths of semilength n and height exactly 4.at n=20A262600Number of Dyck paths of semilength 5*n and height n.at n=4A289475Number A(n,k) of Dyck paths of semilength k*n and height n; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=49A289481