Number of (n+1) X (5+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.
A250752
Number of (n+1) X (5+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.
Terms
- a(0) =294a(1) =957a(2) =3066a(3) =9633a(4) =29814a(5) =91317a(6) =277746a(7) =840873a(8) =2537934a(9) =7644477a(10) =22994826a(11) =69107313a(12) =207567654a(13) =623194437a(14) =1870566306a(15) =5613664953a(16) =16844926974a(17) =50542645197a(18) =151643664186a(19) =454962449793
External references
- oeis: A250752