Number of (n+1) X (3+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.
A250463
Number of (n+1) X (3+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.
Terms
- a(0) =85a(1) =557a(2) =3476a(3) =21753a(4) =135753a(5) =847278a(6) =5286723a(7) =32988493a(8) =205837420a(9) =1284368485a(10) =8014067309a(11) =50005407550a(12) =312018725543
External references
- oeis: A250463