Number of (n+1)X(2+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.
A250670
Number of (n+1)X(2+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) =669a(1) =5154a(2) =34630a(3) =210158a(4) =1185860a(5) =6325144a(6) =32230991a(7) =158164928a(8) =752162284a(9) =3484008326a(10) =15783790118a(11) =70176461116a(12) =307081524576
External references
- oeis: A250670