T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal.

A236809

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal.

Terms

    a(0) =81a(1) =277a(2) =277a(3) =1033a(4) =1435a(5) =1033a(6) =4183a(7) =8825a(8) =8825a(9) =4183a(10) =17481a(11) =60187a(12) =85929a(13) =60187a(14) =17481a(15) =75907a(16) =410305a(17) =929447a(18) =929447a(19) =410305a(20) =75907a(21) =330433a(22) =2926867a(23) =9558409a(24) =16530709a(25) =9558409a(26) =2926867a(27) =330433a(28) =1468723a(29) =20377961

External references