Number of (2+1)X(n+1) 0..3 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.
A250678
Number of (2+1)X(n+1) 0..3 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) =520a(1) =5154a(2) =42422a(3) =329226a(4) =2406972a(5) =16949262a(6) =115965426a(7) =777137322a(8) =5127532140a(9) =33440743748a(10) =216192271674
External references
- oeis: A250678