198129domain: NAppears in sequencesExpansion of (1-3*x+6*x^2-5*x^3+3*x^4-x^5)/(1-x)^6.at n=28A089830Number of (4+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=25A250759