245412domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and having k UDL's (n >= 0; 0 <= k <= floor((n+1)/2)).at n=29A128728Number of skew Dyck paths of semilength n with no UDL's.at n=11A128729