54012domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UDDU's starting at level 1.at n=38A135328Triangle T(n,k) which contains 8*n!*2^floor((n+1)/2) times the coefficient [t^n x^k] exp(t*x)/(7 + exp(4*t)) in row n, column k.at n=29A171684