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

A237398

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

Terms

    a(0) =256a(1) =1314a(2) =1314a(3) =7172a(4) =11988a(5) =7172a(6) =41062a(7) =114034a(8) =114034a(9) =41062a(10) =239176a(11) =1153778a(12) =1794402a(13) =1153778a(14) =239176a(15) =1413864a(16) =11725568a(17) =30590608a(18) =30590608a(19) =11725568a(20) =1413864a(21) =8412540a(22) =121195320a(23) =514064312a(24) =902019154a(25) =514064312a(26) =121195320

External references