Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

A253371

Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw.

Terms

    a(0) =11100a(1) =148389a(2) =2000385a(3) =10639450a(4) =70942616a(5) =263498334a(6) =1236284027a(7) =3879857482a(8) =15018062571a(9) =43293101209a(10) =149879110202a(11) =414532604594

External references