Number of (n+1)X(4+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.
A250687
Number of (n+1)X(4+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) =11150a(1) =60508a(2) =324648a(3) =1670016a(4) =8038566a(5) =36673634a(6) =160222342a(7) =676640344a(8) =2784280670a(9) =11235235268a(10) =44688274606a(11) =175922640288a(12) =687672281246
External references
- oeis: A250687