147556480375domain: NAppears in sequencesNumber of Dyck paths having n (positive) levels and exactly n peaks per level.at n=4A288940Number A(n,k) of Dyck paths having exactly k peaks in each of the levels 1,...,n and no other peaks; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=40A288972