T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.

A237694

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.

Terms

    a(0) =256a(1) =1120a(2) =1120a(3) =5038a(4) =6964a(5) =5038a(6) =23838a(7) =44648a(8) =44648a(9) =23838a(10) =115028a(11) =305054a(12) =408824a(13) =305054a(14) =115028a(15) =567446a(16) =2123660a(17) =4021892a(18) =4021892a(19) =2123660a(20) =567446a(21) =2840760a(22) =15253914a(23) =40288632a(24) =57342898a(25) =40288632a(26) =15253914a(27) =2840760a(28) =14437142

External references