Number of (4+1) X (n+1) 0..2 arrays with nondecreasing 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.

A250816

Number of (4+1) X (n+1) 0..2 arrays with nondecreasing 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) =1389a(1) =4321a(2) =10233a(3) =20631a(4) =37333a(5) =62469a(6) =98481a(7) =148123a(8) =214461a(9) =300873a(10) =411049a(11) =548991a(12) =719013a(13) =925741a(14) =1174113a(15) =1469379a(16) =1817101a(17) =2223153a(18) =2693721a(19) =3235303a(20) =3854709a(21) =4559061a(22) =5355793a(23) =6252651a(24) =7257693a(25) =8379289a(26) =9626121a(27) =11007183

External references