361711domain: NAppears in sequencesExpansion of (2/(3*sqrt(1-4*z)-1+4*z))*((1-sqrt(1-4*z))/(2*z))^k with k=7.at n=8A172064Number of 4 X n 0..1 arrays with rows unimodal and columns nondecreasing.at n=14A225011a(n) = Sum_{k=0..n} (-1)^k * binomial(3*n-k-1,n-k).at n=8A371813