T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.

A235765

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.

Terms

    a(0) =16a(1) =48a(2) =48a(3) =141a(4) =216a(5) =141a(6) =378a(7) =977a(8) =977a(9) =378a(10) =988a(11) =3900a(12) =6882a(13) =3900a(14) =988a(15) =2482a(16) =15197a(17) =41446a(18) =41446a(19) =15197a(20) =2482a(21) =6109a(22) =55816a(23) =242684a(24) =375746a(25) =242684a(26) =55816a(27) =6109a(28) =14712a(29) =199720

External references