Number of (n+1) X (7+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

A250768

Number of (n+1) X (7+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Terms

    a(0) =519a(1) =798a(2) =1158a(3) =1680a(4) =2526a(5) =4020a(6) =6810a(7) =12192a(8) =22758a(9) =43692a(10) =85362a(11) =168504a(12) =334590a(13) =666564a(14) =1330314a(15) =2657616a(16) =5312022a(17) =10620636a(18) =21237666a(19) =42471528a(20) =84939054a(21) =169873908a(22) =339743418a(23) =679482240a(24) =1358959686a(25) =2717914380a(26) =5435823570

External references