Number of (3+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.
A250694
Number of (3+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) =2512a(1) =15246a(2) =74631a(3) =324648a(4) =1315446a(5) =5098590a(6) =19218493a(7) =71223396a(8) =261469392a(9) =955896790a(10) =3493273891a(11) =12795574192a(12) =47067986826a(13) =174102348110a(14) =648137931065
External references
- oeis: A250694