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

A236893

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

Terms

    a(0) =81a(1) =245a(2) =245a(3) =781a(4) =975a(5) =781a(6) =2605a(7) =4129a(8) =4129a(9) =2605a(10) =8901a(11) =19005a(12) =22393a(13) =19005a(14) =8901a(15) =31253a(16) =91617a(17) =134361a(18) =134361a(19) =91617a(20) =31253a(21) =111685a(22) =464737a(23) =824753a(24) =1107653a(25) =824753a(26) =464737a(27) =111685a(28) =406949a(29) =2442897

External references